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27 August, 18:43

The formula for perimeter of a rectangle is P=2L+2W where L is the length and w is the width. A rectangle has a perimeter of 24 inches. Find its dimensions if its length is 4 inches greater than its width.

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  1. 27 August, 21:48
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    24=2 (w+4) + 2w=4w+8, subtract 8 from both sides 4w=16, w=4. L=w+4 so l is 8. The dimensions are 8 by 4.
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