Mathematics 0580 · IGCSE · Area and perimeter

Area and perimeter — practice question

The diagram depicts a smaller circle with radius 7 cm and a larger circle with radius $R$ cm. It is marked NOT TO SCALE. The total area of 16 small circles is equal to the area of one large circle.
(main)[3]

Calculate the value of $R$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$16\times7^2=\pi R^2$” …

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