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19 August, 11:52

The length of a rectangle is 3 meters less than twice the width. If the area of the rectangle is 209 square meters, find the dimensions.

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  1. 19 August, 12:22
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    Length: 2w - 3

    width: w

    Area (A) = L x w

    209 = (2w - 3) w

    209 = 2w² - 3w

    0 = 2w² - 3w - 209

    0 = (2w + 19) (w - 11)

    0 = 2w + 19 0 = w - 11

    w = - 19/2 w = 11

    Since width cannot be negative, disregard - 19/2

    w = 11

    Length: 2w - 3 = 2 (11) - 3 = 22 - 3 = 19

    Answer: width = 11 meters, length = 19 meters
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