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21 May, 21:21

The width of a rectangle is three less than the length. if the area of the rectangle is 88 square cm, find the dimensions of the rectangle

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  1. 21 May, 21:45
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    Let the length be l

    Then,

    l * (l-3) = 88

    l²-3l = 88

    l²-3l-88=0

    l²-11l + 8l - 88 = 0

    l (l-11) + 8 (l-11) = 0

    (l+8) (l-11) = 0

    As, l can't be negative, length=11cm and width = (l-3) = 11-3 = 8 cm
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