SOLUTION: The lenght of a rectangle is twice it's width. If the area is 200 cm squared, find its perimeter

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Question 828711: The lenght of a rectangle is twice it's width. If the area is 200 cm squared, find its perimeter
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
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x = 2y
xy = 200
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2yy = 200
yy = 100
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y = 10
x = 20
p = 2x + 2y
p = 2(x + y)
p = 2(30)
p = 60 cm
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