SOLUTION: If the length of the rectangle is twice the width, and the perimeter of the rectangle is 30 cm, what is the length and width of the rectangle?

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Question 366933: If the length of the rectangle is twice the width, and the perimeter of the rectangle is 30 cm, what is the length and width of the rectangle?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If the length of the rectangle is twice the width, and the perimeter of the rectangle is 30 cm, what is the length and width of the rectangle?
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Let the width be "x":
Then the length is "2x":
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Perimeter = 2(width + length)
30 = 2(x+2x)
30 = 2(3x)
x = 5 cm (width)
2x = 10 cm (length)
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Cheers,
Stan H.