Work out the area of a semi circle with a radius of 3cm give your answer in terms of pi

Question

asked Mar 8, 2021 160k views

1 Answer

Hom Bahrani · Answer 1 · 2021-03-14T09:03:35+0000

Solution:

Given that,

We have to find the area of a semi circle with a radius of 3 cm

The area of semicircle is given as:

$Area\ of\ semicircle = ( \pi r^2)/(2)$

Where, r is the radius

From given,

r = 3 cm

Substituting the values we get,

$Area\ of\ semicircle = ( \pi * 3^2)/(2)\\\\Area\ of\ semicircle = ( \pi * 9)/(2)\\\\Area\ of\ semicircle = 4.5 \pi$

Thus the area of semicircle is
$4.5 \pi\ cm^2$