SOLUTION: If a cardboard tube is cut vertically, it is a rectangle. What is the surface area is a cardboard tube that is 4 inches long with a circumference of 5 inches?

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Question 979763: If a cardboard tube is cut vertically, it is a rectangle. What is the surface area is a cardboard tube that is 4 inches long with a circumference of 5 inches?
Answer by Alan3354(69443) About Me  (Show Source):
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If a cardboard tube is cut vertically, it is a rectangle. What is the surface area is a cardboard tube that is 4 inches long with a circumference of 5 inches?
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4*5 = 20 sq inches