Question

find the perimeter of semi circle ​

Answer 1

Perimeter of circle = 2πr

Perimeter of semicircle = πr + 2r

Thus,

Perimeter of given semicircle in the attachment

$\to \tt \bigg \{\frac{22}{7} \times 7 \bigg\}+ 2(7)\\ \\ \to \tt22 + 14 \\ \to \sf \red{36 \: \: cm}$