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Homework Help: Quadratic equations: Perimeter and Area fencing dimensions

  1. Mar 24, 2013 #1
    1. The problem statement, all variables and given/known data
    The following enclosure is built using 280 m of fencing. If the enclosure has a total area of 2800 m2, what are the dimensions to the nearest tenth?

    2. Relevant equations
    x = [itex]\frac{-b ± \sqrt{b^{2}-4ac}}{2a}[/itex]

    3. The attempt at a solution
    Please note that the 3/2w and 5/2w were measurements I did with a ruler. I am pretty sure that is wrong since this question is not suppose to require manual measurements.

  2. jcsd
  3. Mar 24, 2013 #2


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    Assume the enclosure is L long and W wide.

    What is the amount of fencing used, in terms of W and L?
    What is the area of the enclosure, in terms of W and L?
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