SOLUTION: A metal pipe that is 1m long has an outside radius of 4cm and an inside radius of 3cm. How many cubic centimeters of metal are in the pipe?

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Question 335601: A metal pipe that is 1m long has an outside radius of 4cm and an inside radius of 3cm. How many cubic centimeters of metal are in the pipe?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Use the volume of a cylinder,
V=pi%2AR%5E2%2AL
.
.
Vouter=pi%2A4%5E2%2A3
Vinner=pi%2A3%5E2%2A3
.
.
Vmetal=Vouter-Vinner=pi%2A3%2A%2816-9%29
Vmetal=21%2Apicc