Mathematics 0580 · IGCSE · Circles, arcs and sectors

Circles, arcs and sectors — practice question

The diagram depicts a figure formed from two semicircles that share a common centre. The radius of the larger semicircle is 7 cm, and the radius of the smaller semicircle is 4 cm.

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Determine the perimeter of the shape. Express your answer in terms of $\pi$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The perimeter is $11\pi+6$.” …

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Step-by-step worked solution
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