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    TheresaMae's Avatar
    TheresaMae Posts: 2, Reputation: 1
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    #1

    Nov 25, 2009, 10:07 AM
    how to solve simple word quadratic equations
    A rectangle is 4cm longer than it is wide, and its area is 117 cm2. Find its dimensions.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Nov 25, 2009, 10:33 AM

    Have a simple sketch.

    Let the length of the rectangle be x and the width be y.

    The length is longer by 4, as compared to the width.
    That means that x = y + 4

    You have to add 4 to the width so that both are of the same length.

    How do you find area? It's length times width, hence xy. That is equal to 117. So, xy = 117. Now you have:

    x = y + 4
    xy = 117.

    Solve simultaneously to get the answers.
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