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1999 AMC 8 #5

Source:

June 17, 2011
geometryperimeter

Problem Statement

A rectangular garden 50 feet long and 10 feet wide is enclosed by a fence. To make the garden larger, while using the same fence, its shape is changed to a square. By how many square feet does this enlarge the garden?
(A) 100(B) 200(C) 300(D) 400(E) 500 \text{(A)}\ 100\qquad\text{(B)}\ 200\qquad\text{(C)}\ 300\qquad\text{(D)}\ 400\qquad\text{(E)}\ 500
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