Question

If the circumference of a circle is 2 pie cm, what is the measure of it's radius? Write it..​

Answer 1

1 cm

Explanation:

We know that the formula for the circumference of a circle is
`2\pi r`, where
`r` is the radius.

Because the circumference of the circle in the question is
`2 \pi`, we have

`2\pi = 2 \pi r`

So
`r=1` (cm).