SOLUTION: the area of a rectangle is 525cm2. find the dimensions of a rectangle if the ratio of the length to the width is 7:3.

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Question 228344: the area of a rectangle is 525cm2. find the dimensions of a rectangle if the ratio of the length to the width is 7:3.
Answer by rfer(10432) About Me  (Show Source):
You can put this solution on YOUR website!
7x*3x=525
21x^2=525
x^2=25
x=5
7x=35 cm
3x=15 cm