Question

find the radius of a circle whose circumference is 22 cm

Answer 1

2πr = 22 cm

πr = 22 / 2 = 11 cm

r = 11 / π cm

r ≈ 11 / 3.14 cm

r ≈ 3.5 cm

Answer 2

Given:

A circle has a circumference of 22cm.

To find:

We have to find the radius of the circle.

Solution:

The circumference of a circle is given as 2πr.

Where r is the radius of the circle.

$2\pi r = 22 \\ 2 \times \frac{22}{7} r = 22 \\ r = 3.5$

Thus, the radius of the circle is 3.5cm.