Question

A circle has a circumference of 361π. What is the diameter of the circle?

Answer 1

Circumference of a circle = πD

Given that the circumference = 361π

πD = 361π

D = 361 units

Answer 2

The formula to find circumference of circle is given by

`C =2\pi r`

Where r is radius of circle and pi =3.14

We are given Circumference here as 361π

Plugging the value in the formula :

`361\pi =2\pi r`

r=361/2 = 180.5

radius of circle is 180.5.

We know that Diameter is double of radius.

So diameter = 2*180.5 = 361

Answer: Diameter of circle is 361.