Question

find the area of a circle whose circumference is 22cm

Answer 1

circumference of circle
2πr = 22
πr = 11
r = 3.5

area = πr x r
= 22/7 x 3.5 x 3.5
=38.5

Answer 2

Answer:

Therefore, the area of the the circle is 38.5 c$m^{2}$

Step by Step Explanation:

Given :

Circumference of the circle(in cm) = 22 cm

Formula used to find out the circumference of a circle = 2$\pi$

Radius of the circle = 2 * 22/7 * r = 22 (Given)

=> 44/7 * r = 22

=> 44r = 22 * 7

=> 44r = 154

=> 154 / 44

r = 3.5 cm

Radius of the following circle is 22 cm.

Formula used to find the area of a circle = $\pi r^{2} h$

Now we can find the area of the circle = 22/7 * 3.5 * 3.5

$= 38.5 cm^{2}$

Therefore, the area of the the circle is $38.5 cm^{2}$