Question 912740
"A rectangle's length and width are in a ratio of 3:1" means


Length = 3x


Width = 1x


Area = Length * Width


A = L*W


75 = 3x*1x


75 = 3x^2


3x^2 = 75


x^2 = 75/3


x^2 = 25


x = sqrt(25)


x = 5


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Length = 3x = 3*5 = 15


Width = 1x = 1*5 = 5


The length is <font color="red">15 ft</font> and the width is <font color="red">5 ft</font>


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Thanks,


Jim