SOLUTION: A rectangle is 4 times longer than it is wide. The perimeter of the rectangle is 30cm. Find the dimensions of the rectangle.

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Question 522408: A rectangle is 4 times longer than it is wide. The perimeter of the rectangle is 30cm. Find the dimensions of the rectangle.
Answer by oberobic(2304) About Me  (Show Source):
You can put this solution on YOUR website!
L = Length
W = Width
.
L = 4*W
.
Perimeter = 2(L+W) = 90
.
Substitute
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2(4*W +W) = 90
8W + 2W = 90
10W = 90
.
W = 9
L = 4*W = 4*9 = 36
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Check perimeter.
2(36+9) = 90
Correct.
.
Answer: L = 36, W = 9
.
Done.