Question

if diameter of semicircle is 7 cm then find its perimeter​

Answer 1

Answer:

diameter=7cm

radius=7÷2=3.5cm

area of semicircle with diameter=22/7×3.5+7

=22×0.5+7

=22×7.5

=165 cm square

Answer 2

Answer:

Area of circle =

$\pi {r}^{2}$

Area of semicircle =

$\frac{1}{2} \times \pi {r}^{2}$

:.