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18 July, 19:27

The width of a rectangle is 3 inches less than its length. The area of the rectangle is 340 square inches. What are the length and width of the rectangle?

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  1. 18 July, 19:37
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    A = WL

    A = 340

    W = L - 3

    340 = (L-3) (L)

    340 = L^2 - 3L

    L^2 - 3L - 340 = 0

    L = 20

    W = l - 3

    W = 20 - 3

    W = 17

    so the length is 20 inches and the width is 17 inches
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