Question

Find the circumference of a circle whose area is 301.84 cm². 

Answer 1

Given,

Area of the circle = 301.84 cm²            

We know that,

Area of a Circle = πr² = 301.84 cm²  

(22/7) × r² = 301.84

r² = 13.72 x 7 = 96.04

r = √96.04 = 9.8

So, the radius is = 9.8 cm.

Now, Circumference of a circle = 2πr

= 2 × (22/7) × 9.8 = 61.6 cm

Hence, the circumference of the circle is 61.6 cm.