Mathematics 0580 · IGCSE · Circles, arcs and sectors

Circles, arcs and sectors — practice question

The diagram depicts a sector of a circle, with centre O and radius 9 cm. Its sector angle is $72^{\circ}$. The points are marked O, A and B. The drawing is not to scale.
(a)[2]

Calculate how long arc AB is.

(b)[2]

Calculate the area covered by sector AOB.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Use $2\times 9\times \pi\times \frac{72}{360}$” …

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