Question

What is the radius of a circle. If its area is 120 sq. cm ? also find its circumference

Answer 1

Let radius be r
area 120cm²
circumference c
area 120 = πr²
120*7/22 = r²
840/22= r²
38.18= r²
6.18=r
c= 2πr
=38.8
THIS MAY HELPS YOU
MARK ME AS BRAINLIEST

Answer 2

Given,

Area of the circle = 120 sq. cm

To Find,

The radius of the circle =?

The circumference of the circle =?

Solution,

We can solve the question using the following steps:

Area of a circle = $\pi r^{2}$

Substituting the values,

$120 = \pi r^{2}$

$120 = 3.14*r^{2}$

$\frac{120}{3.14} = r^{2}$

$r^{2} = 38.21$

$r = \sqrt{38.21}$

$r = 6.18 cm$

Now.

$Circumference = 2\pi r$

                         $= 2*3.14*6.18$

                          $= 38.81 cm$

Hence, the radius of the circle is 6.18 cm and the circumference of the circle is 38.81 cm.