Mathematics 0580 · IGCSE · Circles, arcs and sectors

Circles, arcs and sectors — practice question

$OAB$ is the sector of a circle with centre $O$, radius $8\text{ cm}$, and sector angle $30^\circ$. $BC$ is at right angles to $OA$. The diagram is labelled NOT TO SCALE.
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Calculate the area of the shaded part in the diagram.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Accepted answer $2.9$ (or $2.898$ to $2.901$)” …

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