SOLUTION: The length of a rectangle is three times its width.
If the area of the rectangle is 300 cm squared, find its perimeter.
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-> SOLUTION: The length of a rectangle is three times its width.
If the area of the rectangle is 300 cm squared, find its perimeter.
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Question 863007: The length of a rectangle is three times its width.
If the area of the rectangle is 300 cm squared, find its perimeter. Answer by JulietG(1812) (Show Source):
You can put this solution on YOUR website! L = 3W [The length of a rectangle is three times its width. ]
L * W = 300 (Area = length * width)
Substitute the known value of L into the equation.
(3w) * w = 300
3w^2 = 300
Divide each side by 3
w^2 = 100
Take the square root of each side
w = 10
.
Let's check the answer.
If the width is 10, then the length is 3x that, or 30.
30 * 10 = 300
Success!
