Math Is Fun Forum

rachael00l

Member

Registered: 2012-10-13

Posts: 1

Geometry- surface area and volume of toblerone box

The measurements from my box are W-28cm L-17.4cm H2.4cm. I have to find the surface area of the box, as well as the volume.For the volume, I have the formula 1/2 base*height*width, so would that be 1/2 * 17.4 * 2.8 * 2.4, or do i find the area of the triangle, and then multiply by the height? For the surface area, would i find the area of the rectangle( 17.4 * 2.8) and then multiply by three for the three rectangles, and then find the area of the end triangle, and multiply by 2? Im just a little confused.Thanks!

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Geometry- surface area and volume of toblerone box

Hi;

Welcome.

Looking at Bob's drawing below I have recomputed the answers. I never had toblerone because I do not eat chocolate.

For the volume you use base * height * width.
You will get 584.64 cm^3

Which are you now calling base, height and width?

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,629

Re: Geometry- surface area and volume of toblerone box

Are you sure you are talking about the same object?

These measurements don't seems right for a Toblerone box.

I've put a picture below with lettered points.  Is this the box you are asking about?

Rachael1001:  Please check your measurements and say which is which by using my letters.

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Sunnysonny

Member

Registered: 2016-08-08

Posts: 1

Re: Geometry- surface area and volume of toblerone box

Bob bundy...do you happen to knw the toblerone measurement from F to E? Cheers.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,629

Re: Geometry- surface area and volume of toblerone box

hi Sunnysonny

Welcome to the forum.

Sorry, I haven't got one in the cupboard.  In the UK there a plenty of shops that sell them.  I've also seen giant ones at airports.

Couldn't find sizes on their website, but, given how much free advertising they are getting, I'm sure they'll be happy to tell us.

I've sent them an email.

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

thickhead

Member

Registered: 2016-04-16

Posts: 1,086

Re: Geometry- surface area and volume of toblerone box

It spells like troublesome box.

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{1}Vasudhaiva Kutumakam.{The whole Universe is a family.}
(2)Yatra naaryasthu poojyanthe Ramanthe tatra Devataha
{Gods rejoice at those places where ladies are respected.}

Bob

Administrator

Registered: 2010-06-20

Posts: 10,629

Re: Geometry- surface area and volume of toblerone box

When the GCSE exam was devised in the UK, one of the requirements was that questions should be 'realistic'.    So questions are supposed to use values that could really occur in real life.  So the Toblerone box is a favourite as you don't get many triangular prisms in real life and this is one that will be familiar to the candidates.  From their website it looks like the company is a UK one so I'm not sure how much of the world has the joy of this product.

As this forum is read all over the world, maybe they'll offer me a job in the world-wide advertising department   As I haven't eaten one for years I cannot comment on the tastiness of the product.  If they read this perhaps they'll sent some samples

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Bob

Administrator

Registered: 2010-06-20

Posts: 10,629

Re: Geometry- surface area and volume of toblerone box

hi all chocoholics,

It has taken a while because the customer services lady had to check with head office but finally I have this:

My thanks to Ciara at Mondelez International Consumer Service and to the Company for permission to post their diagram.

Happy eating! 

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

pman21

Member

Registered: 2021-11-15

Posts: 2

Re: Geometry- surface area and volume of toblerone box

thank for this i need for school