The mass, MMM, of a solid sphere is directly proportional to the cube of its radius, rrr.
When M=3.125M = 3.125M=3.125, r=0.5r = 0.5r=0.5
Find the value of r r\,r when M=200M = 200M=200
Practise Edexcel GCSE Maths Direct and Inverse Proportion with exam-style questions for Foundation and Higher tier. 96 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.