Question

A collar of Styrofoam is made to insulate a pipe. Find its volume The large radius is to the outer rim. The small radius r is to the edge of the insulation. Use π for 3.14. r = 3 in R = 5 in h = 18 in. Round 2 decimal places

Answer 1

Take the entire volume (when r=5) and subtract off the volume (when r=3) and what is left is the volume of the collar : )