SOLUTION: the sides of a rectangle are in the ratio of 3:5 and the rectangles area is 135 sq cm. find the dimensions of the rectangle.

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Question 530552: the sides of a rectangle are in the ratio of 3:5 and the rectangles area is 135 sq cm. find the dimensions of the rectangle.
Found 2 solutions by stanbon, mananth:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
the sides of a rectangle are in the ratio of 3:5 and the rectangles area is 135 sq cm. find the dimensions of the rectangle.
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3:5 is the same as 3x:5x
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Equation:
3x*5x = 135
15x^2 = 135
x^2 = 9
x = 3
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Dimensions:
3x = 9 cm
5x = 15 cm
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cheers,
Stan H.

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
the ratio of sides = 3/5
multiply by constant x
3x=width
length = 5x
Area = L*W
135 = 3x*5x
135=15x^2
135/15= x^2
9=x^2
x= 3
width =>3x= 9
Length = 15