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4 March, 18:44

The length of a rectangle is 1m more than twice its width, and the area of the rectangle is 66m2. Find the dimensions of the rectangle.

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  1. 4 March, 18:53
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    A = LW

    A = 66

    L = 2W + 1

    66 = W (2W + 1)

    66 = 2W^2 + W

    2W^2 + W - 66 = 0

    (2W - 11) (W + 6) = 0

    2W - 11 = 0

    2W = 11

    W = 11/2

    W = 5.5

    W + 6 = 0

    W = - 6 (this is an extraneous solution ... it will not work)

    L = 2W + 1 = 2 (5.5) + 1 = 12

    so ur dimensions are : Length = 12m and width = 5.5m
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