SOLUTION: write formula in terms of its radius: S=2pie*r*h+2pie*r squared

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Question 205737This question is from textbook algebra 2
: write formula in terms of its radius: S=2pie*r*h+2pie*r squared This question is from textbook algebra 2

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
write formula in terms of its radius: S=2pie*r*h+2pie*r squared
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Do you mean solve for r?
S=2pi*r*h+2pi*r^2 (It's the Greek letter pi, not the dessert, pie.)
r^2 + rh = S/2pi
r^2 + rh - S/2pi = 0
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r+=+%28-h+%2B+sqrt%28h%5E2+%2B+2S%2Fpi%29%29%2F2
r+=+%28-h+-+sqrt%28h%5E2+%2B+2S%2Fpi%29%29%2F2