Length of Rectangle

The width of a rectangle is 2 cm less than its length. The perimeter of the rectangle is 16 cm. What is the length of the rectangle?

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1 Answer

W=L-2; 2L+2W=16, where W=width and L=length. Substitute for W in the perimeter equation: 2L+2L-4=16, so 4L-4=16 and 4L=20 and L=5cm, making W=3cm.

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