SOLUTION: S(2r) = 1/3*pir^2(2r)= Please help me solve I need this tonight?

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Question 775591: S(2r) = 1/3*pir^2(2r)= Please help me solve I need this tonight?
Answer by tanjo3(60) About Me  (Show Source):
You can put this solution on YOUR website!
I assume that your equation looks like:
S(2r) = %281%2F3%29%28pi%29r%5E2%282r%29

(1) r^2(2r) = 2r^3
%281%2F3%29%28pi%29%282r%5E3%29+=+0%29

(2) Divide both sides by 2(pi)/3
r%5E3+=+0%29

(3) Cube root both sides. You are left with:
r = 0