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.
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Video walkthrough
Area and Circumference of Circles Questions
45 exam-style questions on OCR GCSE Maths Area and Circumference of Circles. Each one has a worked solution and a mark scheme showing where the marks go.