Question

What is the radius of this circle if the circumference is 18
cm?
C-18x cm

Answer 1

The radius of the circle is 2.86 cm.

Explanation:

Given,

The circumference of the circle = 18 cm

To find the radius of the circle.

Formula

The circumference of a circle of radius r is 2πr

According to the problem,

2πr = 18

or, r =
`(18X7)/(22X2)` = 2.86 (approx)

Hence,

The radius of the circle is 2.86 cm.