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