SOLUTION: How many cubic feet of sand will I need to fill a pipe 1.5" I.D. which is 10 feet long? Thanks in advance!

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Question 726127: How many cubic feet of sand will I need to fill a pipe 1.5" I.D. which is 10 feet long?
Thanks in advance!
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
How many cubic feet of sand will I need to fill a pipe 1.5" I.D. which is 10 feet long?
:
Use the volume of a cylinder: V = pi%2Ar%5E2%2Ah
Diameter of 1.5, a radius of .75 inches
Change length to inches also; 12(10) = 120 inches
V = pi%2A.75%5E2%2A120
V ~ 212 cu/in
:
Change to cubic ft, there are 1728 cu/in in 1 cu/ft
212%2F1728 = .123; roughly 1%2F8 cu/ft