SOLUTION: the area of a rectangle is 525 square centimeters. the ratioof the length to width is 7:3. find the length and the width

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Question 271932: the area of a rectangle is 525 square centimeters. the ratioof the length to width is 7:3. find the length and the width
Found 2 solutions by mananth, palanisamy:
Answer by mananth(16946) (Show Source):
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the area of a rectangle is 525 square centimeters. the ratioof the length to width is 7:3. find the length and the width
L/W = 7/3
L= 7/3*w
(7/3*w)* w = area = 525
7/3*w^2= 525
w^2= 3*525 / 7
w^2= 225
w= 15 cms.

525/15 = length = 35 cms ( Area/ width ) = length

Answer by palanisamy(496) (Show Source):
You can put this solution on YOUR website!
Let the length be 7x and width be 3x
Its area is 7x*(3x) = 525
21x^2 = 525
x^2 = 525/21
x^2 = 25
x=5
So length = 7*5=35
width = 3*5 = 15