# arrow_back Calculate the area of the shaded part

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Calculate the area of the shaded part

$15cm^2$

Explanation:

$64-\frac{1}{2} \times 4 \times 8-\frac{1}{2} \times 4 \times 7-\frac{1}{2} \times 1 \times 8-\frac{1}{2} \times 2 \sqrt{5} x=\frac{1}{2} \times 2 \sqrt{5} x$
$x=3 \sqrt{5}$

Blue Area $=\frac{1}{2} \times 2 \sqrt{5} \times 3 \sqrt{5}=15$

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