A=LxW

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Length of a rectangle is 13 cm less than 5 times it's width. Its area is 28 square cm. Find dimensions of rectangle

  • A=LxW -

    L = 5W-13
    LW = 28

    (5W-13)W = 28
    5W^2 - 13W - 28 = 0
    (5W+7)(W-4) = 0

    so, W=4
    L = 5*4-13 = 7

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