Shape P is a semi-circle which has a radius of 20 cm. Shape Q is a circle.
The area of shape P is 8 times the area of shape Q.
Show that the radius of shape Q is 5 cm.
Practise OCR GCSE Maths Area and Circumference of Circles with exam-style questions for Foundation and Higher tier. 47 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.