Question

The radius of a truck wheel is 3 ft. what is the approximate circumference if the truck wheel.

Answer 1

Circumference = $2 \pi r$
When you plug that in you should have $(2* \pi ) *3$
Solve that and you have your answer(: I would recommend rounding to the nearest hundreth

Answer 2

C= d*pi
Pi is around 3.14.
Radius = 1/2 of Diamater.
(3*2)*3.14
^ Just use this equation ^