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The perimeter of a rectangle equals the sum of the lengths of its four sides. If the width of a rectangle is 4 inches and its perimeter is 36 inches, find the length of the rectangle.

The length of the rectangle is ?

My answer was 144, is this correct?

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2 answers
  1. P = Perimeter

    W = Width

    L = Length

    P = 2 W + 2 L

    36 = 2 * 4 + 2 L

    36 = 8 + 2 L Subtract 8 to both sides

    36 - 8 = 8 + 2 L - 8

    28 = 2 L Divide both sides by 2

    28 / 2 = 2 L / 2

    14 = L

    L = 14 in

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  2. never mind -worked it out!!

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