Question

If the diameter of a semi circular protractor is 14 cm, then find its perimeter .

Answer 1

Perimeter if semicircle $=\pi r+2r$

since $d=14cm$

$r=\frac{d}{2}=\frac{14}{2}=7cm$

$\frac{d}{2}=\frac{14}{2}=7cm$

$=22cm+14cm$

$=36cm.$