(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An open tank is constructed with a square base and vertical sides to hold 32 cubic metres of water. Find the dimensions of the tank if the area of sheet metal used to make it is to have a minimum value

2. Relevant equations

3. The attempt at a solution

i just know i need to find the second derivatives of it, but dont know the purpose of it

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# Homework Help: Minumum surface for a given volume

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