Shape C is a semi-circle which has a radius of 24 cm. Shape D is a circle.
The area of shape C is 18 times the area of shape D.
Show that the radius of shape D is 4 cm.
Practise Edexcel GCSE Maths Area and Circumference of Circles with exam-style questions for Foundation and Higher tier. 47 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.