Question

A round rim has a radius of 5 inches. Find the circumference of the rim. Round to the nearest tenth. Use 3.14 for π.

r = 5 in

The circumference of the rim is ____
in.

Answer 1

Answer: 31.4

Explanation:

circumference= pi times diameter

radius is half of diameter

if r=5 then d=10 so

pi times 10= 3.14 times 10= 31.4

Answer 2

`2 \pi \: r \\ 2 * 3.14 * 5 \\ = 31.4inches`