SOLUTION: What is the suface area of a cardboard tube tube that is 4 inches long with a circumference of 5 inches?

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Question 315177: What is the suface area of a cardboard tube tube that is 4 inches long with a circumference of 5 inches?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The surface area of the tube (the outside) is the circumference multiplied by the length of the tube.
SA=C%2AL=5%2A4=20sq.in.