Question

area of a semicircle with radius 2cm​

Answer 1

Answer:

pi. r. r. /2

Step-by-step explanation:

22.2.2/7

88/7

12.5 approximately

Answer 2

Answer:

Hence, area of semicircle will be $\frac{44}{7}$ 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 = 2 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,

$Area = \frac{1}{ 2}\Pi r^2\\=\frac{1}{2} \times \frac{22}{7} \times 2^2\\=\frac{1}{2} \times \frac{22}{7} \times 4 =\frac{11 \times 4}{7}= \frac{44}{7}\:cm^2$