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Who needs maths? We all need maths! | 0:00:02 | 0:00:04 | |
Maths is your friend, madam! Who needs maths? | 0:00:04 | 0:00:08 | |
Who does need maths? Well, you need maths. | 0:00:08 | 0:00:11 | |
No, no - don't turn around. It's you I'm talking to. You need maths. Why? | 0:00:11 | 0:00:15 | |
Because maths is in everything that you do, OK? | 0:00:15 | 0:00:17 | |
It's in your look, in your clothes and your hair. | 0:00:17 | 0:00:20 | |
It's in the food that you eat. It's in your house where you live. | 0:00:20 | 0:00:23 | |
It's in your health and your fitness. | 0:00:23 | 0:00:24 | |
Trust me, I'll prove this to you. | 0:00:24 | 0:00:26 | |
Maths is all around you - you just weren't looking hard enough. I mean, there's even maths in comedy. | 0:00:26 | 0:00:31 | |
In a recent poll, right, they discovered that, erm, | 0:00:36 | 0:00:40 | |
50% of people understand percentages. | 0:00:40 | 0:00:44 | |
And er, the remaining 83% don't. | 0:00:44 | 0:00:47 | |
Who needs percentages? You need percentages. | 0:00:52 | 0:00:55 | |
Percentages are everywhere. | 0:00:55 | 0:00:57 | |
50% off in the sale. | 0:00:57 | 0:00:59 | |
50% polyester. 26% fat content. | 0:00:59 | 0:01:02 | |
13% of the public vote. | 0:01:04 | 0:01:06 | |
63% of my time watching television and consuming pasties. | 0:01:06 | 0:01:11 | |
I think I'm 80% sure that I'm a 100% out of shape. | 0:01:11 | 0:01:14 | |
I'm applying for Celebrity Space Hopper Mathletes, | 0:01:14 | 0:01:17 | |
which of course, as you know, features 12 celebrities | 0:01:17 | 0:01:19 | |
pitching their maths skills against each other on a space hopper. | 0:01:19 | 0:01:22 | |
Could be my chance to meet a regional news presenter. | 0:01:22 | 0:01:25 | |
The winner gets a 12-month teaching contract and a massive golden space hopper. | 0:01:25 | 0:01:29 | |
And I want a piece of that. | 0:01:29 | 0:01:31 | |
Now, it says here on the application form that all competitors will be | 0:01:31 | 0:01:34 | |
expected to give one 110% effort at all times. | 0:01:34 | 0:01:38 | |
Is that even possible? Can you give a 110% effort? | 0:01:38 | 0:01:41 | |
Think I'd better ask someone who knows. | 0:01:42 | 0:01:45 | |
This is Riccardo, personal trainer to the stars and now me. | 0:01:45 | 0:01:48 | |
Right, now, erm, maths... | 0:01:48 | 0:01:50 | |
-Yeah. -In personal fitness, does it feature, is it a thing? | 0:01:50 | 0:01:53 | |
It's a massive thing in my industry. | 0:01:53 | 0:01:55 | |
It's one of the things that's most important cos we have to find out lots of different types of | 0:01:55 | 0:01:59 | |
percentages, for example, the workout intensity a client can go to. | 0:01:59 | 0:02:02 | |
We work out percentages when it comes to nutrition. | 0:02:02 | 0:02:05 | |
And also, there's body statistics as well. | 0:02:05 | 0:02:07 | |
Pick it up! Pick it up! | 0:02:07 | 0:02:08 | |
So even in the world of health and fitness, maths is key. | 0:02:08 | 0:02:11 | |
Keep it going, keep it going! | 0:02:11 | 0:02:12 | |
Riccardo uses it to work out how hard to push his clients. | 0:02:12 | 0:02:16 | |
This is hardcore maths. | 0:02:16 | 0:02:17 | |
Because winners train, losers complain. | 0:02:17 | 0:02:20 | |
Keep it strong! Up! | 0:02:20 | 0:02:22 | |
-Are you a winner? -Yes! | 0:02:22 | 0:02:24 | |
Right, let's get some claps. Yes! | 0:02:24 | 0:02:27 | |
Push it! Lovely! | 0:02:27 | 0:02:30 | |
That's what I'm looking for. | 0:02:30 | 0:02:33 | |
OK, Sanjeev, our goal is to try and find out what you can lift, | 0:02:33 | 0:02:35 | |
once and once only, ie your 100% maximum effort. OK? | 0:02:35 | 0:02:40 | |
-OK. -And we're going to focus on doing a bench press. | 0:02:40 | 0:02:43 | |
Riccardo's started me off with just a bar and he reckons lifting this | 0:02:45 | 0:02:48 | |
is taking about 30% of my effort. | 0:02:48 | 0:02:50 | |
And as the weights get added on I can feel it getting harder. | 0:02:53 | 0:02:57 | |
I'm not sure how much more I'm going to be able to lift! | 0:02:57 | 0:03:00 | |
Three, two, one...and lift. | 0:03:00 | 0:03:01 | |
HE GROANS | 0:03:03 | 0:03:04 | |
-There we go. -OK. -I got you. -OK. | 0:03:05 | 0:03:07 | |
-Whenever you're ready. One time is what we're going for. -Yeah. | 0:03:07 | 0:03:09 | |
Ready and....drop. | 0:03:09 | 0:03:11 | |
Good, now push. | 0:03:14 | 0:03:15 | |
HE GROANS | 0:03:15 | 0:03:16 | |
Keep going, keep going, keep going, Do you think you could do one more? | 0:03:16 | 0:03:19 | |
Shall I try? | 0:03:19 | 0:03:21 | |
-You can try. -OK. | 0:03:21 | 0:03:22 | |
OK. Push, push. | 0:03:25 | 0:03:26 | |
Mummy! Daddy! Argh! | 0:03:26 | 0:03:29 | |
-I've got it. -No, no. | 0:03:29 | 0:03:32 | |
Well, I did manage to speak some words of Serbo-Croat there | 0:03:32 | 0:03:35 | |
but I certainly didn't manage to lift that. | 0:03:35 | 0:03:38 | |
So the point is that that was your 100% maximum effort. | 0:03:38 | 0:03:41 | |
So showing obviously that 100% maximum effort is all you can do. | 0:03:41 | 0:03:45 | |
So there you go, point proved. | 0:03:45 | 0:03:47 | |
You cannot give more than a 100%. | 0:03:47 | 0:03:49 | |
Yes, despite what the celebrity mathletes folk | 0:03:52 | 0:03:55 | |
and football managers say, 100% is the maximum. | 0:03:55 | 0:03:59 | |
Clear? Good. Right, that's plenty of Riccardo. | 0:03:59 | 0:04:02 | |
Time to make that golden space hopper mine. | 0:04:02 | 0:04:05 | |
OK, so we're going to have to get you ready for the Celebrity Space Hopper Mathletes. | 0:04:07 | 0:04:11 | |
-OK. Ready when you are. -Ready? OK. | 0:04:11 | 0:04:14 | |
Do you think I'll be able to do this? | 0:04:17 | 0:04:19 | |
-I think so. -I'm not so sure. | 0:04:19 | 0:04:23 | |
-So your maximum heart rate is 178 beats per minute. -Right. | 0:04:23 | 0:04:27 | |
What I want to do is, I want you to find out for me | 0:04:27 | 0:04:29 | |
what 60% of that is? | 0:04:29 | 0:04:31 | |
106.8, sir! | 0:04:32 | 0:04:34 | |
Good! OK, round it up to the nearest whole number. | 0:04:34 | 0:04:36 | |
107. | 0:04:36 | 0:04:37 | |
Perfect! What's 70% of 130? | 0:04:37 | 0:04:41 | |
Bring up the tempo. Work it out! | 0:04:41 | 0:04:43 | |
-91. -91. Perfect, yes. | 0:04:45 | 0:04:47 | |
Give me more, give me more! | 0:04:47 | 0:04:49 | |
You need 80% of the public vote to get into the final of Celebrity Space Hopper Mathletes, OK. | 0:04:51 | 0:04:56 | |
-We expect 5,600 calls to come in. -Really? | 0:04:56 | 0:05:00 | |
Sanjeev, tell me what 80% of 5,600 is. | 0:05:00 | 0:05:02 | |
4,480 votes. | 0:05:05 | 0:05:08 | |
That's correct! And... | 0:05:08 | 0:05:11 | |
and stop! | 0:05:11 | 0:05:13 | |
Well, I gave 100%, which is all I could give. | 0:05:15 | 0:05:20 | |
And Riccardo is very impressed. | 0:05:20 | 0:05:23 | |
In fact he was so impressed he's offered me 33.3% reduction | 0:05:23 | 0:05:27 | |
in his personal training rate, which is a third. | 0:05:27 | 0:05:30 | |
It's very reasonable. | 0:05:30 | 0:05:31 | |
Here's the answer I gave him. | 0:05:32 | 0:05:34 | |
I once had a 2-week argument with a 90-degree angle. | 0:05:41 | 0:05:45 | |
Turned out he was right. | 0:05:46 | 0:05:48 | |
AUDIENCE GROANS | 0:05:48 | 0:05:50 | |
Angles, angles, who needs angles? Well, you need angles. | 0:05:52 | 0:05:56 | |
To stand up. To sit down. | 0:05:56 | 0:05:59 | |
To stand up again. | 0:05:59 | 0:06:01 | |
To walk. | 0:06:01 | 0:06:03 | |
To moonwalk. | 0:06:04 | 0:06:05 | |
Look here, I can't moonwalk. The point is, every time you move, you're using angles. | 0:06:08 | 0:06:12 | |
You don't even know it. Check this out. | 0:06:12 | 0:06:16 | |
Right angle! | 0:06:16 | 0:06:17 | |
And er... | 0:06:18 | 0:06:19 | |
Acute angle! | 0:06:22 | 0:06:23 | |
Do you know what else is cute? This haircut. | 0:06:25 | 0:06:29 | |
It's a new style that I'm thinking of showcasing. | 0:06:29 | 0:06:31 | |
But I don't know, I don't think I can get away with that any more. | 0:06:31 | 0:06:34 | |
Besides, the whole palm tree thing is very last year. | 0:06:34 | 0:06:37 | |
No, no, I think I need to rethink my look and who better to | 0:06:37 | 0:06:40 | |
help me out than top hair professor, Mr Sharz Din. | 0:06:40 | 0:06:43 | |
-Sharz, how are you? -Very good, thank you very much. How are you? | 0:06:43 | 0:06:46 | |
I'm not too bad. So, maths and hair. | 0:06:46 | 0:06:50 | |
Surely two completely mutually exclusive separate worlds? | 0:06:50 | 0:06:53 | |
Not at all. Erm, what's very interesting | 0:06:53 | 0:06:55 | |
about that is that we actually use maths all the time, particularly geometry. | 0:06:55 | 0:06:59 | |
And the most important part of it, of course, | 0:06:59 | 0:07:01 | |
is the understanding of angles. | 0:07:01 | 0:07:02 | |
OK, so could you maybe talk me through specifically how you | 0:07:02 | 0:07:06 | |
use angles in hair and at the same time sort out my barnet? | 0:07:06 | 0:07:09 | |
Why don't we have a little look at a couple of models | 0:07:09 | 0:07:12 | |
-and see how angles work on the head shape? -OK, sounds good. | 0:07:12 | 0:07:16 | |
This is the lovely Helen. | 0:07:16 | 0:07:18 | |
-Hello. And who's this chatterbox here? -Er, this is er, Sally. | 0:07:18 | 0:07:22 | |
To be honest I've been giving Sally a really good scalp ritual | 0:07:22 | 0:07:25 | |
for two minutes and I'm getting nothing back off her. Are you all right, love? | 0:07:25 | 0:07:29 | |
Anyway, what are we going to do today, then? | 0:07:29 | 0:07:31 | |
Well, first of all, what we're going to do is an iconic haircut | 0:07:31 | 0:07:35 | |
called the graduated bob. | 0:07:35 | 0:07:37 | |
And it starts off at the back, shorter at the nape, | 0:07:37 | 0:07:42 | |
rounder at occipital bone travelling into a horizontal line | 0:07:42 | 0:07:46 | |
-to complement the jaw. -OK, so it's a genuine combination of different angles. | 0:07:46 | 0:07:50 | |
It certainly is. Are you ready to get started? | 0:07:50 | 0:07:53 | |
Are you ready to go? I'll take that as a yes. | 0:07:53 | 0:07:55 | |
Whoa, whoa, whoa, whoa! Stop right there! | 0:08:07 | 0:08:10 | |
-What? -It's not looking quite how it should, is it? | 0:08:10 | 0:08:13 | |
I'm not hearing HER complain. | 0:08:13 | 0:08:15 | |
Why don't you put your scissors down, and I'll show you how we work with angles? | 0:08:15 | 0:08:19 | |
Bit harsh. | 0:08:19 | 0:08:22 | |
We've sectioned Helen's hair off. | 0:08:22 | 0:08:25 | |
-Into two right angles, I notice. -Very good. | 0:08:25 | 0:08:27 | |
And two right angles coming together make that section perpendicular. | 0:08:27 | 0:08:33 | |
OK. | 0:08:33 | 0:08:34 | |
Now, how we start is, | 0:08:34 | 0:08:36 | |
if we imagine the jaw is horizontal or at zero degrees... | 0:08:36 | 0:08:42 | |
Yeah. | 0:08:42 | 0:08:44 | |
And that would make that angle 90 degrees, | 0:08:44 | 0:08:48 | |
I'm going to cut Helen's hair at 45 degrees, right in between. | 0:08:48 | 0:08:55 | |
Now after that, the angle then becomes less and less | 0:08:55 | 0:09:02 | |
or more ACUTE as I work around the head. | 0:09:02 | 0:09:07 | |
You're stepping down, down, down, down, more and more acute | 0:09:07 | 0:09:10 | |
as you work around the head and then you finally hit zero. | 0:09:10 | 0:09:13 | |
-Very good. Excellent. -Wow, who knew there was so much maths in hair? | 0:09:13 | 0:09:18 | |
Check the skills. The man is simply a wizard with the scissors | 0:09:18 | 0:09:22 | |
but he couldn't do this without the maths to back it up. | 0:09:22 | 0:09:25 | |
Maestro, it's beautiful! Look at all the angles! | 0:09:25 | 0:09:28 | |
-It's nice how it all combines. -So can you repeat that trick with your angle skills | 0:09:28 | 0:09:33 | |
and do something with this? | 0:09:33 | 0:09:34 | |
We can try. | 0:09:34 | 0:09:36 | |
Right, Sanj, this is your new look. | 0:09:46 | 0:09:50 | |
Vertical, 45 degrees, horizontal. | 0:09:50 | 0:09:55 | |
What do you think? | 0:09:55 | 0:09:57 | |
I think it's the future of hair. | 0:09:57 | 0:09:59 | |
You've actually created a new hairstyle. | 0:09:59 | 0:10:02 | |
-I've even got a name for it. -What's that? -The protractor! | 0:10:02 | 0:10:06 | |
I don't understand, right, I keep putting up | 0:10:11 | 0:10:13 | |
the volume on my television and it's still the same size. | 0:10:13 | 0:10:19 | |
# Pump up the volume, pump up the volume, pump up the volume, check it out... # | 0:10:21 | 0:10:26 | |
WHO NEEDS VOLUME? Sorry, you need volume. | 0:10:26 | 0:10:29 | |
Volume is the measure of the space taken up by three-dimensional objects. | 0:10:29 | 0:10:33 | |
And pretty much all of your possessions are three-dimensional objects. | 0:10:33 | 0:10:36 | |
Your hat, your cat, your bat. It doesn't even have to rhyme with hat. | 0:10:36 | 0:10:40 | |
Everything you own takes up space. How much space? VOLUME? | 0:10:40 | 0:10:45 | |
I mean, look, I've got no space left in this room. | 0:10:45 | 0:10:48 | |
It's just full of junk I don't even use any more. Look. Legs! | 0:10:48 | 0:10:51 | |
I've got a perfectly good pair in my trousers. | 0:10:51 | 0:10:54 | |
What have I got? Yes! | 0:10:54 | 0:10:56 | |
This, 100 copies of this. | 0:10:56 | 0:10:57 | |
The Sanjeev workout plan. Why didn't that sell? | 0:10:57 | 0:11:01 | |
Space hopper. I take the bus now. | 0:11:01 | 0:11:04 | |
What else? Ukulele... | 0:11:04 | 0:11:07 | |
Why didn't that career take off? The old ball pit. | 0:11:10 | 0:11:13 | |
I mean, phff, the number of nights I've spent in that. | 0:11:13 | 0:11:17 | |
But I need to get rid of it all. I need to free up some space. I need to put all this stuff up in storage | 0:11:17 | 0:11:21 | |
and frankly it's too big a job for one man. | 0:11:21 | 0:11:24 | |
I think I'm going to need some help. | 0:11:24 | 0:11:26 | |
And this is why I keep this man, Gavin, in my cupboard. | 0:11:26 | 0:11:29 | |
Gavin, you are, are you not, an expert in volume? | 0:11:29 | 0:11:32 | |
-I am. -How so? -I run a removals and storage company | 0:11:32 | 0:11:35 | |
and for every job we do, we need to have an accurate volume of the job | 0:11:35 | 0:11:39 | |
so we know what's going to fit in boxes, or what's going to fit in our vans and containers. | 0:11:39 | 0:11:44 | |
So, can I ask you, using that volume brain, to hazard a guess as to the | 0:11:44 | 0:11:47 | |
total volume of the stuff I need to take out of here and put in storage? | 0:11:47 | 0:11:51 | |
Total volume...including the furniture is five million | 0:11:51 | 0:11:55 | |
cubic centimetres or five cubic metres. | 0:11:55 | 0:11:58 | |
Now that's a lot of cubic centimetres | 0:11:58 | 0:12:02 | |
but will it all fit in Gavin's wee van? | 0:12:02 | 0:12:05 | |
Now let's start with the ball pit, yeah? Erm, I'm actually quite sad to see this go. | 0:12:05 | 0:12:09 | |
I've got quite attached to this. I even gave all the balls a name, so that one's called Derek. | 0:12:09 | 0:12:13 | |
-OK, right, can you help me work out the volume of this ball pit, please? -Sure. | 0:12:13 | 0:12:17 | |
What have you got? | 0:12:17 | 0:12:19 | |
-80 centimetres. -And I also have 80 centimetres. | 0:12:19 | 0:12:22 | |
Er, but it is a cuboid so we need to measure the height as well, don't we? | 0:12:22 | 0:12:26 | |
We do indeed. And the height's 30 centimetres. | 0:12:26 | 0:12:28 | |
OK so that's 80 x 80 x 30. | 0:12:28 | 0:12:31 | |
So it's a 192,000 cubic centimetres. Is there room in your van for this? | 0:12:37 | 0:12:41 | |
-Plenty! -OK, let's take it, come on! | 0:12:41 | 0:12:44 | |
Gavin's van only holds five cubic metres. | 0:12:44 | 0:12:47 | |
Let's hope his estimate of my stuff is right. Or it could be two trips! | 0:12:47 | 0:12:51 | |
-Gavin, check me out! I've found some old clothes. -Nice! | 0:12:51 | 0:12:54 | |
But maybe we should stop monkeying around and get this stuff packed. | 0:12:54 | 0:12:57 | |
-Fair enough, have you got something we could put this in? -Yeah, we could put it in here. | 0:12:57 | 0:13:01 | |
Do you remember how to calculate the volume of a cylinder? | 0:13:01 | 0:13:04 | |
Yes, I do. Er, we need some measurements, don't we? | 0:13:04 | 0:13:07 | |
We need to measure the height of the cylinder first of all. | 0:13:07 | 0:13:11 | |
The height is 48 centimetres. | 0:13:11 | 0:13:13 | |
OK and then we need the radius, so if you can do the diameter. | 0:13:13 | 0:13:17 | |
The diameter is 46 centimetres. | 0:13:17 | 0:13:19 | |
Which means the radius is half the diameter, which is 23 centimetres | 0:13:19 | 0:13:23 | |
so now I've got an equation. | 0:13:23 | 0:13:25 | |
So that's 79,730.88 cubic centimetres of my old clothes. In you go! | 0:13:33 | 0:13:40 | |
The success of Gavin's business relies on accurate volume calculations. | 0:13:42 | 0:13:46 | |
The wrong measurement of even the smallest objects can make or break a job. | 0:13:46 | 0:13:51 | |
Right, I think that's everything packed. I think we've done it. | 0:13:51 | 0:13:54 | |
Everything except for the sticky notes! | 0:13:54 | 0:13:57 | |
Oh, disaster! Have we not accounted for these? | 0:13:59 | 0:14:03 | |
Can we get these in your van? Better measure them. That's er, 7.6 centimetres... | 0:14:03 | 0:14:06 | |
..by 7.6 centimetres by... by 7.6 centimetres! | 0:14:09 | 0:14:14 | |
-Yeah, I think we can squeeze it in. -Oh, thank Harry Styles! | 0:14:14 | 0:14:17 | |
Right, come on. Let's get this stuff into the van. Come on! | 0:14:17 | 0:14:20 | |
Great. Gavin was right. It did all fit into his wee van. | 0:14:26 | 0:14:30 | |
Happy days! But even happier days because get this... | 0:14:30 | 0:14:33 | |
I don't have to move it any more | 0:14:33 | 0:14:34 | |
because I found a brilliant empty room to store it all in! | 0:14:34 | 0:14:38 | |
How did I miss it? Honestly, I'm so unobservant sometimes. | 0:14:38 | 0:14:41 | |
There's only one question remains. Does it have enough volume? | 0:14:41 | 0:14:45 | |
You cannae trust these people, right, that want to make all the measurements metric. | 0:14:50 | 0:14:54 | |
Honestly. | 0:14:54 | 0:14:55 | |
Give them an inch and they take 1.609344 kilometres. | 0:14:55 | 0:15:00 | |
Measurement. Who needs measurement? Well, we all need measurement. | 0:15:04 | 0:15:07 | |
You measure everything. You measure time. You measure... | 0:15:07 | 0:15:12 | |
distance. You measure space. | 0:15:12 | 0:15:15 | |
You measure trousers. | 0:15:15 | 0:15:19 | |
I could go on. The point is, it's hard to get a measure on how much we need measurement. | 0:15:19 | 0:15:23 | |
I've been invited a very important party tonight | 0:15:23 | 0:15:26 | |
so I've been clothes shopping. | 0:15:26 | 0:15:27 | |
Hit the sales and er, you know what it's like. | 0:15:27 | 0:15:29 | |
You go sale shopping and sometimes you buy stuff that doesn't quite fit. | 0:15:29 | 0:15:33 | |
Clearly measurement is the issue here | 0:15:35 | 0:15:37 | |
so I need to find someone who can do some clothes maths. | 0:15:37 | 0:15:41 | |
And this is Elle. She seems stressed. | 0:15:41 | 0:15:43 | |
Sorry, she's a seamstress. | 0:15:43 | 0:15:44 | |
Yeah! I make and alter clothes. | 0:15:44 | 0:15:47 | |
So do you think you can rescue these clothes and make me | 0:15:47 | 0:15:50 | |
look sharp for this party and also, is there any maths involved in that? | 0:15:50 | 0:15:53 | |
Well, maths is really important in dressmaking and altering clothes. Erm, measurement is key. | 0:15:53 | 0:15:59 | |
And erm, when you get measurements wrong this is kind of what can happen. | 0:15:59 | 0:16:03 | |
For example, this is far too big across the shoulders. | 0:16:03 | 0:16:05 | |
And that's a little bit long in the sleeve. | 0:16:05 | 0:16:07 | |
And then the trousers, you can see they're a bit snug and erm, | 0:16:07 | 0:16:11 | |
a tad short. Erm... | 0:16:11 | 0:16:13 | |
You've got a good eye. | 0:16:13 | 0:16:15 | |
-What, er, is your inside leg measurement? -Er, 34 inches? | 0:16:15 | 0:16:19 | |
34 inches? | 0:16:19 | 0:16:20 | |
Well, most of the time I work in centimetres. | 0:16:20 | 0:16:23 | |
86. Just over 86 centimetres. | 0:16:23 | 0:16:25 | |
-OK. -It's quite long. So if I could ask you to hold that there. | 0:16:25 | 0:16:29 | |
And you can see that these trousers are only 73 centimetres, | 0:16:29 | 0:16:34 | |
which is far too short. | 0:16:34 | 0:16:35 | |
-That's really quite short, isn't it? -Yeah... | 0:16:35 | 0:16:37 | |
Can these be rescued, then? | 0:16:37 | 0:16:38 | |
Well... The only thing I could do is add some more material on to the bottom. | 0:16:38 | 0:16:43 | |
Erm, but it would be different material | 0:16:43 | 0:16:46 | |
and it would be quite an interesting look. | 0:16:46 | 0:16:48 | |
I think I'll give that a miss. | 0:16:48 | 0:16:49 | |
-Are you sure? -Yeah, I think so. So, erm, | 0:16:49 | 0:16:53 | |
-trousers for the bin, you think? -I'm afraid so. | 0:16:53 | 0:16:55 | |
OK. Right, OK, well, fair enough. Move on. Jacket. | 0:16:55 | 0:16:58 | |
The jacket. Because the jacket's bigger, it's easier to make things smaller so you can take fabric out. | 0:16:58 | 0:17:03 | |
So you can think then that you will be able to make this jacket look immeasurably sharp for the party? | 0:17:03 | 0:17:07 | |
I'm pretty sure there's something we can do. | 0:17:07 | 0:17:12 | |
So fashion isn't just about the look. | 0:17:12 | 0:17:14 | |
The maths is crucial, too. | 0:17:14 | 0:17:16 | |
Elle needs to be spot-on with her sums. | 0:17:16 | 0:17:18 | |
One centimetre either way and I could be in fashion Alaska. | 0:17:18 | 0:17:23 | |
Elle's taking care of my jacket to make sure | 0:17:23 | 0:17:25 | |
I look dangerously good for the party tonight. | 0:17:25 | 0:17:27 | |
Good enough even to justify a hat! Only one problem. | 0:17:27 | 0:17:31 | |
I've got a massive head. Huge! | 0:17:31 | 0:17:33 | |
Seriously, it's got its own moon and everything. | 0:17:33 | 0:17:36 | |
This is the question. | 0:17:36 | 0:17:37 | |
Do we have the maths to find a hat big enough for this watermelon? | 0:17:37 | 0:17:42 | |
This is Pea. She's a milliner. | 0:17:42 | 0:17:44 | |
That doesn't mean she's in a higher tax bracket, | 0:17:44 | 0:17:46 | |
it means she makes hats from scratch, which is very impressive. | 0:17:46 | 0:17:49 | |
OK now, be honest. You're the expert. Is there a hat for this bonce? | 0:17:49 | 0:17:53 | |
Absolutely, Sanjeev. There's hats for everybody these days! | 0:17:53 | 0:17:59 | |
A hat for everyone, she says. | 0:17:59 | 0:18:01 | |
I'm not sure she knows what she's letting herself in for. | 0:18:01 | 0:18:06 | |
Wow! | 0:18:06 | 0:18:07 | |
All right, now see that's what I'm talking about. Yeah, I like that. | 0:18:10 | 0:18:13 | |
-Er, do you think maybe though, you could make it in a different material or something? -Absolutely! | 0:18:13 | 0:18:18 | |
Luckily this style is one-size-fits-all. | 0:18:18 | 0:18:21 | |
Now, let's see where the maths comes in. | 0:18:21 | 0:18:25 | |
This is the crown of the hat, Sanjeev. | 0:18:25 | 0:18:27 | |
In order for me to work out how much wire I need, | 0:18:27 | 0:18:30 | |
I need to know the circumference of this circle. | 0:18:30 | 0:18:33 | |
Oh, the circumference. | 0:18:33 | 0:18:34 | |
Ah, so you'll be measuring the diameter of the circle. | 0:18:34 | 0:18:36 | |
-Yep, the diameter is 12 centimetres. -Magic. | 0:18:36 | 0:18:40 | |
This gives me a chance to showcase my very favourite equation. | 0:18:40 | 0:18:44 | |
To work out the circumference, | 0:18:44 | 0:18:45 | |
Pea needs to multiply pi by the diameter. | 0:18:45 | 0:18:48 | |
But that's not the only measurement Pea needs for her business to be a success. | 0:18:48 | 0:18:54 | |
It's very time consuming, this hat-making business, isn't it? | 0:18:54 | 0:18:57 | |
Yeah, it really is. | 0:18:57 | 0:18:58 | |
So on average, how long would it take to make a hat? | 0:18:58 | 0:19:01 | |
I would probably be spending about 30 minutes | 0:19:01 | 0:19:03 | |
on a consultation with someone. | 0:19:03 | 0:19:06 | |
Possibly, 45 minutes pattern cutting. | 0:19:06 | 0:19:08 | |
And then, maybe three and a half hours making a hat? | 0:19:08 | 0:19:12 | |
-That's four hours and 45 minutes in total. -Yeah. | 0:19:12 | 0:19:16 | |
I look at the time it's taken to make the hat | 0:19:16 | 0:19:18 | |
and then I look at the cost of the materials. | 0:19:18 | 0:19:21 | |
And then I'll come up with the final price for the completed hat. | 0:19:21 | 0:19:25 | |
Whoa, whoa, whoa, whoa! Am I getting charged for this? | 0:19:25 | 0:19:30 | |
Well, Pea had to give me the hat for free because Elle sewed | 0:19:30 | 0:19:33 | |
the money into the jacket pocket after she did this lovely fitting. Result! I'm off to a party! | 0:19:33 | 0:19:37 | |
See you later! | 0:19:37 | 0:19:39 | |
What did, what did, what did zero to say eight? | 0:19:42 | 0:19:46 | |
Nice belt. | 0:19:46 | 0:19:48 | |
Area. Who needs area? Well, we all need area. | 0:19:51 | 0:19:54 | |
Area defines the size of the surface. | 0:19:54 | 0:19:56 | |
And we all live on surfaces. Unless you're hovering. | 0:19:56 | 0:19:59 | |
Are you hovering? No. Are you hoovering? | 0:19:59 | 0:20:03 | |
Well, clearly not, judging by the state of your room. How long has that apple been there? | 0:20:03 | 0:20:07 | |
If you are hoovering, though, you're hoovering a carpet. A surface. A surface that requires material. | 0:20:07 | 0:20:12 | |
How much material? Area. | 0:20:12 | 0:20:15 | |
This bathroom is minging. Don't worry, it's not mine! | 0:20:15 | 0:20:18 | |
Like I would use a bathroom like this. | 0:20:18 | 0:20:19 | |
No, it's my mate's and I've decided to give it a secret makeover. | 0:20:19 | 0:20:23 | |
I've arranged for her to be away for the day and I'm going to transform this space and hopefully make her | 0:20:23 | 0:20:27 | |
cry as well, because, well, all the best makeover shows do, don't they? | 0:20:27 | 0:20:30 | |
I've got tiles, I've got paint. | 0:20:30 | 0:20:34 | |
What I don't have is any idea if I've got too much or not enough of that stuff. | 0:20:34 | 0:20:38 | |
I don't have much time but thankfully help is at hand. | 0:20:38 | 0:20:41 | |
-This is Steven. How are you doing, Steven? -Hi there. How are you? | 0:20:41 | 0:20:43 | |
-Now you're a tiler by trade, aren't you? -Yes, I am. -So is maths something you use every day? | 0:20:43 | 0:20:47 | |
Yes, we use it every day. We use it for pricing jobs and measuring jobs. | 0:20:47 | 0:20:50 | |
So is area your specialist area? | 0:20:50 | 0:20:53 | |
Yes, we need to work out how many tiles we need. | 0:20:53 | 0:20:55 | |
OK. Good, so, you can help me to work out | 0:20:55 | 0:20:58 | |
if I've got enough of THIS to cover all of this. | 0:20:58 | 0:21:00 | |
-Yes, I can do. -Cool. Let's do some magic! | 0:21:00 | 0:21:05 | |
OK, Steven, where do we start? | 0:21:12 | 0:21:14 | |
We need to work out where you want to tile. | 0:21:14 | 0:21:16 | |
OK, well, here's my vision. OK. I'm thinking tiles from the bath up to the rail. | 0:21:16 | 0:21:22 | |
-How far along do you want to go? -Well, again, part of my vision is that I want to contain the | 0:21:22 | 0:21:26 | |
aquatic space so I'm thinking just actually to the edge of the bath. | 0:21:26 | 0:21:29 | |
-Then we'll need to measure the length by the height. -OK. | 0:21:29 | 0:21:32 | |
-Well, do you want to the length and I'll do the height? -Fine. | 0:21:32 | 0:21:35 | |
So the length is 170 centimetres | 0:21:36 | 0:21:39 | |
and the height is 96 centimetres. | 0:21:39 | 0:21:41 | |
Right, good so that's us worked out the area that needs to be tiled so do we have enough tiles? | 0:21:43 | 0:21:47 | |
Yes, I think so but we'll need to measure the area of one tile to see if I've got enough. | 0:21:47 | 0:21:50 | |
OK, right. Well, I'll hold the tile if you can do the measuring. | 0:21:50 | 0:21:56 | |
It's 15 centimetres by 15 centimetres. | 0:21:56 | 0:21:58 | |
OK. So the area of one tile is length times breadth, which is | 0:21:58 | 0:22:02 | |
15 centimetres by 15 centimetres which is... | 0:22:02 | 0:22:04 | |
225 square centimetres. | 0:22:07 | 0:22:09 | |
(That's very good...) | 0:22:09 | 0:22:10 | |
So to work out how many tiles we need, | 0:22:10 | 0:22:12 | |
we divide that area by the area of that. | 0:22:12 | 0:22:15 | |
That's correct, yes. | 0:22:15 | 0:22:19 | |
Right, so we need 72.5 tiles. What does that mean? | 0:22:23 | 0:22:26 | |
What we'll need to do now is we need to add 10% for waste | 0:22:26 | 0:22:29 | |
or breakages which is about 80 tiles. | 0:22:29 | 0:22:32 | |
-OK, so that's something that you normally do? -Every time. | 0:22:32 | 0:22:34 | |
-OK, well, that's good news because 80...we have 80, so we can get cracking. -Yes. | 0:22:34 | 0:22:38 | |
OK, good - let's get started then! | 0:22:38 | 0:22:39 | |
-Right, these are all meant to be white. -Yep. | 0:22:42 | 0:22:44 | |
Er, well, this wasn't part of the vision. | 0:22:44 | 0:22:47 | |
Right, do you know what, though? Let's get creative. | 0:22:47 | 0:22:50 | |
Right, OK. Tell me what you think of this, OK? So we still have the white in the middle... | 0:22:50 | 0:22:54 | |
-Yes. -But, we use these tiles to sort of create a border round there. | 0:22:54 | 0:22:59 | |
-Do you think that might work? -Yes, just tile the perimeter in yellow then? -Aha. -Yes. | 0:22:59 | 0:23:03 | |
-But do we have enough of these tiles to do that? -We should do, yes. | 0:23:03 | 0:23:07 | |
Steven's quick maths confirms I've got enough tiles for my border. | 0:23:07 | 0:23:10 | |
Result! | 0:23:10 | 0:23:11 | |
Wish I'd had his maths skills when I bought the paint. | 0:23:11 | 0:23:13 | |
Turns out I've got enough for the bathroom, the kitchen and a small car. | 0:23:13 | 0:23:18 | |
Oooh! My pal's going to love this! | 0:23:19 | 0:23:22 | |
That's me finished. | 0:23:29 | 0:23:30 | |
Well, I've just heard my friend is on her way back now | 0:23:38 | 0:23:40 | |
and I genuinely, genuinely think we're going to see tears. Oh, yeah. | 0:23:40 | 0:23:46 | |
FRIEND SCREAMS | 0:23:46 | 0:23:48 | |
I always wear my glasses when I'm doing decimals. | 0:23:51 | 0:23:55 | |
Don't see the point otherwise. | 0:23:55 | 0:23:58 | |
AUDIENCE GROANS | 0:23:58 | 0:24:00 | |
Who needs ratios and fractions? Well, you need ratios and fractions. | 0:24:07 | 0:24:11 | |
You use them all the time! | 0:24:11 | 0:24:12 | |
Give me half a minute. | 0:24:12 | 0:24:13 | |
Can I have half rice, half chips? | 0:24:13 | 0:24:15 | |
A third of my class are halfwits - which is the same as saying | 0:24:15 | 0:24:18 | |
half of my class are third wits, mathematically speaking. | 0:24:18 | 0:24:22 | |
One place you'll definitely need your ratios and fractions though, is in the kitchen. | 0:24:22 | 0:24:28 | |
So here's the deal. I've got a pile of mince, the size of my head. | 0:24:28 | 0:24:31 | |
That's a lot of mince. So I'm going to have some friends round for dinner tonight. | 0:24:31 | 0:24:34 | |
20 people are coming. Yeah, I've got 20 friends. | 0:24:34 | 0:24:37 | |
16 are from an agency but the point is I've decided to cook | 0:24:37 | 0:24:40 | |
a big old pot of chilli for 20. | 0:24:40 | 0:24:43 | |
What am I going to need to make chilli for 20? | 0:24:43 | 0:24:45 | |
Well, I think the first think I'm going to need is a bit of help.... | 0:24:45 | 0:24:48 | |
-Hello, Emili! -Hi, Sanjeev. -How are you? -I'm very well, thanks. | 0:24:48 | 0:24:51 | |
Good. Is maths something you would use in your everyday professional life? | 0:24:51 | 0:24:54 | |
Absolutely! Every single day, whether I realise I'm doing it or not, I'm always using maths. | 0:24:54 | 0:24:59 | |
-So what's the most you've ever catered for? -Oh, I've catered for anything from one person to 1,001! | 0:24:59 | 0:25:04 | |
Cool, so you could cope with 20. | 0:25:04 | 0:25:06 | |
I think I can cope with 20. | 0:25:06 | 0:25:07 | |
All you need is confidence in your recipe and some maths! | 0:25:07 | 0:25:13 | |
Well, I've got my mum's secret chilli recipe here | 0:25:13 | 0:25:15 | |
although I clearly got it from a website. | 0:25:15 | 0:25:17 | |
Rumbled, Mum! | 0:25:17 | 0:25:19 | |
But this recipe's only for four people. | 0:25:19 | 0:25:21 | |
Oh, and we're catering for 20. | 0:25:21 | 0:25:23 | |
Ah, so oh, right, so what now, then? | 0:25:23 | 0:25:26 | |
Well, I guess we scale up from four to 20. | 0:25:26 | 0:25:29 | |
So what we're doing then is, it's er, multiplying everything by five. | 0:25:35 | 0:25:38 | |
-Yep. -OK. I think I can cope with that. | 0:25:38 | 0:25:41 | |
So it's er, 500 grams of mince times five is 2,500. | 0:25:41 | 0:25:45 | |
600 grams chopped onions. | 0:25:47 | 0:25:49 | |
OK, so two tins of tomatoes. | 0:25:51 | 0:25:53 | |
-OK, so that's easy. -Two times five. | 0:25:53 | 0:25:55 | |
-Ten! -That's it, you got it! -Ten tins of tomatoes, OK. | 0:26:01 | 0:26:05 | |
Ah, right, now. That wee guy's a fraction. | 0:26:06 | 0:26:09 | |
One-and-a-third cans of kidney beans. | 0:26:09 | 0:26:12 | |
-A bit more tricky. -Yeah, why don't... | 0:26:12 | 0:26:14 | |
What we could do, we could empty a can of kidney beans, | 0:26:14 | 0:26:17 | |
count them and times that by five. | 0:26:17 | 0:26:20 | |
That's crazy talk. Are you scared of a little fraction? | 0:26:20 | 0:26:23 | |
I'm not scared of fractions! | 0:26:23 | 0:26:25 | |
-Put in six and a bit. -Six and a bit? OK. | 0:26:31 | 0:26:35 | |
-Red peppers. -Red peppers. Ten cloves of garlic. | 0:26:36 | 0:26:42 | |
And one stock cube times five. Five stock cubes. OK, next up is the extra-hot chilli paste. | 0:26:42 | 0:26:48 | |
And that's another fraction. | 0:26:48 | 0:26:50 | |
Yeah, this is crucial because I get this wrong and we're spending the night in A&E, ha-ha! | 0:26:50 | 0:26:55 | |
Argh! | 0:26:55 | 0:26:56 | |
So five times 2.5. So that's 12.5 teaspoons of extra-hot chilli paste. | 0:26:56 | 0:27:01 | |
-That's a lot of chilli paste, isn't it? -Well, 20 is a lot of people. | 0:27:01 | 0:27:05 | |
Fair enough, OK. | 0:27:05 | 0:27:08 | |
When it comes to cooking, it's not just recipe and technique. | 0:27:08 | 0:27:12 | |
There's maths in that pot. | 0:27:12 | 0:27:15 | |
Top kitchen work, Emili. | 0:27:15 | 0:27:16 | |
Er, that's the food in good shape, the chilli bubbling away there | 0:27:16 | 0:27:19 | |
like, er, two pots of mince with other stuff in it. | 0:27:19 | 0:27:23 | |
Hopefully in the right ratio. | 0:27:23 | 0:27:24 | |
Er, but what about drinks for my wee soiree? | 0:27:24 | 0:27:28 | |
Well, er, funny you should ask. | 0:27:28 | 0:27:30 | |
Well, I'm a sophisticated kind of guy. Kind of know minor royalty. | 0:27:34 | 0:27:37 | |
I eat fruit you probably never even heard of. | 0:27:37 | 0:27:39 | |
So I want a sophisticated drink. | 0:27:39 | 0:27:41 | |
I'm going for a non-alcoholic cocktail that's one I invented myself. | 0:27:41 | 0:27:45 | |
I call it the Jazzy Handbag. | 0:27:45 | 0:27:47 | |
It's four parts cola, two parts orange juice, | 0:27:47 | 0:27:49 | |
one part chicken stock. Mmm! | 0:27:49 | 0:27:52 | |
So I'm thinking a litre of this taste sensation per guest. | 0:27:52 | 0:27:56 | |
20 guests - and er, not forgetting myself, | 0:27:56 | 0:27:58 | |
that's 21 one litres of Jazzy Handbag. | 0:27:58 | 0:28:02 | |
Who said I can't throw a party? | 0:28:02 | 0:28:03 | |
Ahhhh! | 0:28:11 | 0:28:12 | |
That's perfection. The chicken really dances on the tongue. | 0:28:19 | 0:28:22 | |
So all we need now is guests. | 0:28:22 | 0:28:25 | |
Now as you can see, I've invited them at 7.30 on Saturday | 0:28:25 | 0:28:29 | |
and the time now is... | 0:28:29 | 0:28:31 | |
..quarter to, that's 15 minutes to nine on... | 0:28:31 | 0:28:36 | |
Friday. | 0:28:36 | 0:28:37 | |
Do you like chilli? | 0:28:40 | 0:28:42 | |
Subtitles by Red Bee Media Ltd | 0:28:54 | 0:28:56 |