SOLUTION: 36. S = 2 * pie * r^2 + 2 * pie * r * h find for h

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Question 162150: 36. S = 2 * pie * r^2 + 2 * pie * r * h
find for h
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
S = 2 * pie * r^2 + 2 * pie * r * h: find for h
:
(2*pi*r^2) + (2*pi*r*h) = S
:
2*pi*r*h = S - 2*pi*r^2
:
h = %28S+-+%282%2Api%2Ar%5E2%29%29%2F%282%2Api%2Ar%29 = S%2F%282%2Api%2Ar%29 - %28%282%2Api%2Ar%5E2%29%29%2F%282%2Api%2Ar%29 = S%2F%282%2Api%2Ar%29 - r