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# GCSE Edexcel Mathematics Practice Question watch

1. Hi there,

I'm struggling to answer this maths question on similarity. I would appreciate any answers!

Question:
Two whole cheeses are mathematically similar in shape. The smaller cheese has a radius of 8.4 cm and a volume of 665cm^3. The larger cheese has a radius of 13.2 cm. Work out the volume of the larger cheese.
2. (Original post by Pandora___)
Hi there,

I'm struggling to answer this maths question on similarity. I would appreciate any answers!

Question:
Two whole cheeses are mathematically similar in shape. The smaller cheese has a radius of 8.4 cm and a volume of 665cm^3. The larger cheese has a radius of 13.2 cm. Work out the volume of the larger cheese.
Look at the ratio of the radii:

8.4 : 13.2
= 84 : 132
= 28 : 44
= 7 : 11

So what do we know about the ratio of volumes?

3. (Original post by Muttley79)
Look at the ratio of the radii:

8.4 : 13.2
= 84 : 132
= 28 : 44
= 7 : 11

So what do we know about the ratio of volumes?

I got the answer by starting with your working out. Thank you so much!

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