Question

plsssssssssssssssssssssssssssssss help meThe circumference of a circle is equal to 72 pi. Find the radius of this circle

Answer 1

You know the circumference. You want to find the radius.

This is using the reverse circumference formula! 

CIRCUMFERENCE OF A CIRCLE:
$2 \pi r$ = circumference

Now plug in. $2 \pi r = 72 \pi$

Simplify and isolate r.

$2r=72$

$r=36$

the radius is 36.