Question

if the radius of a semicircle is 5 cm find its area​

Answer 1

Step-by-step explanation:

Given:

>> Radius of a semi-circle = 5 cm

To find:

>> Area of semi-circle = ?

Solution:

$area \: of </em><em>circle \: = \: \pi {r}^{2}$

We know, semi-circle is the half of circle so,

$the \: area \: of \: semi - circle \: = \: \frac{\pi {r}^{2} }{2}$

(putting values)...

$= = > \: \frac{22}{7} \times \: \frac{ {5}^{2} }{2}$

$= = > \: \frac{22}{7} \times \: \frac{25}{2}$

$= = > \: \frac{11}{7} \times \: 25$

$= = > \: \frac{275}{7}$

==> 39.28 cm^2

Hence, the area of semi-circle = 39.28 cm^2

Hope it helped you dear...