In the diagram, $PQ$ is a diameter of the semicircle with centre $O$, angle $PRQ=90{}^\circ $,

Question

In the diagram, $PQ$ is a diameter of the semicircle with centre $O$, angle $PRQ=90{}^\circ $, $PR=8$ cm and $QR=6$ cm. Find the radius of the circle, the shaded area.

Accepted Answer

(a) $5\text{ cm}$ (b) $15.3\text{ cm}^2$

Using Pythagoras to Find Circle Radius and Area

Using Pythagoras to Find Circle Radius and Area

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