The length of rectangle is 6 feet greater than the width. the perimeter is 40 ft. find the dimensions of the rectangle.

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20-09-2017
Mathematics

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The length of rectangle is 6 feet greater than the width. the perimeter is 40 ft. find the dimensions of the rectangle.

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apologiabiology apologiabiology · Answer 1 · 2017-09-20T06:35:00+02:00

apologiabiology apologiabiology

20-09-2017

P=2(L+W)

if L is 6 great than W
L=6+W

and P=40

subsitute 40 for P and 6+W for l

40=2(6+W+W)
40=2(6+2W)
divide both sides by 2
20=6+2W
minus 6 both sides
14=2W
divide both sides by 2
7=W
W=7

sub back
L=6+W
L=6+7
L=13

the rectangle has a length of 13ft and width of 7ft

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