melanieblake14 melanieblake14

02-10-2018
Mathematics

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the length of a rectangle is 5 less than twice its width. if the perimeter is 26 meters, find the dimensions of the rectangle

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02-10-2018

The length of a rectangle is 5 less than twice its width

l = 2w - 5

perimeter is 26 meters

l + w + l + w = 26

2l + 2w = 26

2w = 26 - 2l

l = 2w - 5

l = 26 - 2l - 5

3l = 21

l = 7

w = 13 - l = 13 - 7 = 6

Answer: length 7 meters, width 6 meters

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