geometry

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The perimeter of a rectangle is 42m , and the area of the rectangle is 54m^2 . Find the dimensions of the rectangle.

  • geometry -

    2(x+y)=42
    x+y=21
    xy=54

    x + 54/x = 21

    x^2 - 21x + 54 = 0
    (x-18)(x-3) = 0
    x=18 y=3
    or
    x=3,y=18

    Either way, the rectangle is 3x18

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