Question

If the diameter of a semicircular
protractor is 36 cm, find its area

Answer 1

Hey
Here is your answer
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Diameter of a semicircle is 36cm
so,. radius =36/2
=18

area of a semicircle is
$\: \: \: \: \: \frac{\pi \: r {}^{2} }{2} \: \: \: \\ \: \: \: \frac{ \frac{22}{7} \times 8 \times 8 }{2} \\ \frac{22}{7} \times 64 \times \frac{1}{2} \\ \frac{22 \times 64}{7 \times 2} \\ \frac{1408}{14} \\ 100.57$
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Thanks