Question

Suppose the radius of a circle is 3 units. what is it’s circumference

Answer 1

`\large\boxed{C=6\pi\approx18.84}`

Explanation:

The formula of a circumference of a circle:

`C=2\pi r`

r - radius

We have r = 3.

Substitute:

`C=2\pi(3)=6\pi`

You can use the approximation of a π:

`\pi\approx3.14\\\\C\approx(6)(3.14)=18.84`