Question

A collar of Styrofoam is made to insulate a pipe. Find its volume. The large radius R is to the outer rim. The small radius r is to the edge of the insulation. Use pi almost equals 3.14 .

r​=2 in.
R=3 in.
h​=15 in.

Answer 1

the answer is r=2in

Explanation:

easy to explain but i don't feel like it.