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Design a rectangular milk carton box of width w, length l, and height h which holds 620 cm3 of milk. The sides of the box cost 3 cents/cm2 and the...
Design a rectangular milk carton box of width w, length l, and height h which holds 620 cm3 of milk. The sides of the box cost 3 cents/cm2 and the top and bottom cost 6 cents/cm2. Find the dimensions of the box that minimize the total cost of materials used.