In the figure below, $ABCD$ is an isosceles trapezium, where circle $O$ touches the two parallel

Question

In the figure below, $ABCD$ is an isosceles trapezium, where circle $O$ touches the two parallel sides of trapezium $ABCD$. Find the area of the shaded region, the ratio of the area of the shaded region to the area of trapezium $ABCD$. Leave your answer in terms of $\pi$.

Accepted Answer

(a) $423\text{ cm}^2$ (b) $(39-4\pi):39$

Perimeter and Area of Composite Figures

Perimeter and Area of Composite Figures

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