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The length of a rectangle is 11 centimeters less than three timesthree times its width. its area is 42 square centimeters. find the dimensions of the rectangle.

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  1. 17 May, 21:37
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    Let's call the length l and the width w. The text says

    3w-11 = l

    lw = 42

    This we can solve:

    w (3w-11) = 42 = > 3w² - 11w - 42 = 0

    using the quadratic formula, you'll find that w=6.

    Then l=7
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