Question

Suppose the radius of a circle is three units what is the circumference

Answer 1

`6\pi` or
`18.84` units

Explanation:

The circumference of a circle can be found using the formula
`C=2\pi r`, where
`C` is the circle's circumference and
`r` is the circle's radius. We know that
`r=3` and that we are solving for
`C`. Therefore:

`C=2\pi r\\C=2*\pi *3\\C=6\pi`

Since
`\pi` is approximately
`3.14`,
`6\pi =6*3.14=18.84` units. Hope this helps!