Question

find the circumference of a circle with a radius of 9, that's what it is asking, but I don't understand it, so can you help me?​

Answer 1

Explanation:

circumference of circle (c) = 2πr

= 2. 22/7 . 9cm

= 396cm/7

= 56.57cm

Answer 2

The formula for getting the circumference of a circle is
`C = 2\pi r` where 'r' is the radius. Just plug in the value for the radius.

`C = 2\pi * 9`

We will also use 3.14 for PI.

`C = 2 * 3.14 * 9`

C = 56.52

Hope this helps!