Question

A collar of Styrofoam is made to insulate a pipe. Find its volume . The large R is to the outer rim. The small radius r is to the edge of the insulation. Use 3.14 for pi. r = 5 in. R = 8 in. h = 25 in. use pi

Answer 1

oops i put use pi twice

Answer 2

V=hp(R^2-r^2)

V=1515(3.14)(77^2-55^2) in^3

V≈13814618.4 in^3
Hope this helps!

Answer 3

π * (R^2 - r^2) * 25 = ? in^3

Answer 4

14 million cubic inches seems a bit high...