Question

What is the area of a (A)semicircle whose dia is 20 cm (d)​

Answer 1

Step-by-step explanation:

Given:

Diameter of the semicircle= 20cm

Radius will be= 20/2

= 10cm

Area of the circle:

$\pi \: r ^{2}$

Area of the semicircle:

$\frac{\pi \: r {}^{2}}{2}$

Area of the given semicircle= 22/7 x 10^2

= 22x 100/7

= 1100/7

= 157.14 cm sq