Concept explainers
26. Constructing an Open Box An open box with a square base is required to have a volume of 10 cubic feet.
(a) Express the amount A of material used to make such a box as a function of the length x of a side of the square base.
(b) How much material is required for a base 1 foot by 1 foot?
(c) How much material is required for a base 2 feet by 2 feet?
(d) Use a graphing utility to graph . For what value of x is A smallest?
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Precalculus Enhanced With Graphing Utilities With Mymathlab Package For Central Connecticut State University, 1/e
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