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MarkFL

Gold Member

MHB

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CALCULUS question HELP?

I want to make a large box with a square base that has a volume of 6000in^3. The material for the top and bottom costs 5 cents per square inch and the side material costs 3 cents per sq in. Make a function C that represents the cost of the box in terms of the side length of the bottom of the box. Find the one critical number for C and then give the dimensions of the cheapest box.

I have a final for calculus so I would like to know the steps on how to find the answer. If you could do that it would really help. Thank you in advance.

I have posted a link there to this thread so the OP can view my work.

edit: Before I could post my solution the OP deleted the question.