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

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): You can put this solution on YOUR website!
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
RELATED QUESTIONS
The area of a rectangle is 525 square centimeters. The ratio of the length to width is... (answered by Greenfinch)
the area of a rectangle is 525 square centimeters. the ratio of the length to the width... (answered by TimothyLamb)
Find the dimensions of a rectangle whose width is (4x - 3), length is (3x + 2), and the (answered by mananth)
the length of a rectangle is 7 more than the width. the area is 330 square centimeters.... (answered by mananth)
The area of a rectangle is 98 square centimeters. It's length is twice it's width. Find... (answered by Alan3354)
The length of a rectangle is three centimeters greater than the width. The area is 108... (answered by ankor@dixie-net.com)
The width of a rectangle is 9 centimeters less than the length. The area is 136... (answered by Hawksfan)
The length of a rectangle is 7 centimeters less than four times its width. Its area is 15 (answered by JBarnum)
[ The area of a rectangle is 440 square centimeters; The perimeter is 84 centimeters.... (answered by TimothyLamb)