Question

Find the exact circumference of a circle with the given radius 3 and 1/2 cm​

Answer 1

7π

Explanation:

The circumference (C) of a circle is

C = 2πr = 2π ×
`(7)/(2)` =
`(14\pi )/(2)` = 7π

Answer 2

Explanation:

Radius is half diameter so you have to multiply the radius by 2 to find diameter.

3 1/2 * 2 = 7