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Length and Width

The perimeter of a rectangle is 138 inches. The length exceeds the width by 65 inches. Find the length and width.

P = 2l + 2w

l = w + 65

138 = 2( w + 65) + 2w

138 = 2w + 130 + 2w

138 = 4w + 130

138 - 130 = 4w + 130 - 130

8 = 4w

8/4 = (4/4) w

2 = w

l = 2 + 65 = 67

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Length and Width

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Dec 17, 2012
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