SOLUTION: How is the Surface Area of a closed cylinder with radius "r" and height "h" influenced if "h" is multiplied by 3?

Algebra ->  Surface-area -> SOLUTION: How is the Surface Area of a closed cylinder with radius "r" and height "h" influenced if "h" is multiplied by 3?      Log On


   

Question 889707: How is the Surface Area of a closed cylinder with radius "r" and height "h" influenced if "h" is multiplied by 3?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Total surface area of cylinder, 2pi%2Ar%5E2%2Bh%2A2pi%2Ar.
3 times h for the length (or height) makes the surface area 2pi%2Ar%5E2%2B3h%2Api%2Ar.

Do you want to know the difference or do you want to know how many times bigger is the area?
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%282pi%2Ar%5E2%2B3h%2Api%2Ar%29%2F%282pi%2Ar%5E2%2Bh%2Api%2Ar%29
%28%28pi%2Ar%29%282r%2B3h%29%29%2F%28%28pi%2Ar%29%282r%2Bh%29%29
highlight%28%282r%2B3h%29%2F%282r%2Bh%29%29----How many times bigger