susana10 susana10

08-05-2017
Mathematics

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A rectangle is twice as long as it is wide the area is 72 find the length

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apologiabiology apologiabiology

08-05-2017

area=lw
l=2w
aera=2l^2
72=area

72=2l^2
divide both sides by 2
36=l^2
sqrt both sides
6=l
length=6 units

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