Question

The radius of the semicircle is 7 cm . Find the the area of semicircle

Answer 1

Answer:

The area equals to 77cmsq.

Step-by-step explanation:

Given r=7cm

We know that area of semicircle is given by

= (1/2)π*r*r

=(1/2) (22/7) (7) (7)

=11*7

=77sq.cm.

Therefore the area of semicircle is 77 sq.cm.

Answer 2

Answer:

Hence, area of semicircle will be 77 Sq. cm

Step-by-step explanation:

In context to question asked,

We have to determine the area of semicircle

As per data given in the question,

We have,

Radius of semicircle = 7 cm

As we know that,

Area of semicircle is half the area of circle.

So, formula for finding area of semicircle will be $\frac{1}{2} \Pi r^2$

So, for finding the area of semicircle we will put the value of radius of semicircle in above formula

Thus we will get,

$Area = \frac{1}{ 2}\Pi r^2\\=\frac{1}{2} \times \frac{22}{7} \times 7^2\\=\frac{1}{2} \times \frac{22}{7} \times 49 =11 \times 7= 77\:cm^2$