Mathematic Quiz 14

Question :
Given a cylinder of volume 250 π is closed at both ends. Find length of radius of the cylinder so that its surface area is minimum!
(Note : Application of derivative)
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1. Write about your answer, name, class and handphone number.
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3. Mathematic Quiz 14 is closed on August 31, 2010.
4. You are rewarded for your effort by 2 unit pulse @Rp 20.000,00.
5. Each student only sends one answer.
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Mathematic Quiz 13
Answer : 4
Click here for details.
Winner : Dina Nur Rahmawati ( XI IPA 2 )