Question

The perimeter of the semicircle (radius=7cm)

Answer 1

Solution:-

$\sf \:Perimeter \: of \: Semicircle = \frac{1}{2} \times \: Semicircle \: of \: cirle \\ \sf + diameter \\ \sf \: Given ,\: r = 7cm \\ \tt Perimeter \pink \implies \frac{1}{2} \times 2\pi \: r + 2r \\ = \frac{22}{7} \times 7 + 2 \times 7 \\ \frac{22}{ \cancel7} \times \cancel7 + 2 \times 7 \\ = 22 + 14 \\ \sf \bold\green{= 36cm}$