AP Calculus ABmediummcq1 pt
A farmer has 400 feet of fencing to enclose a rectangular field that borders a river, so fencing is needed on only three sides. What is the maximum possible area of the field?
A.
B.
C.
D.
Explanation
Core Concept
If is the width, the length is and . gives , so the maximum area is .
Correct Answer
D
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