Concept explainers
Building Envelope The building code in a certain town requires that a house be at least 10 ft from the boundaries of the lot. The buildable area (or building envelope) for the rectangular lot shown in the following figure is given by
(a) Explain how the expression for
(b) Expand to express
(c) A contractor has a choice of purchasing one of two rectangular lots, each having the same area. One lot measures 100 ft by 400 ft; the other measures 200 ft by 200 ft. Which lot has the larger building envelope?
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