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

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

Answer»

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.

Discussion