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Math Help - volume of a solid

  1. #1
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    volume of a solid

    find the volume of a solid whose base is the semicircle y=\sqrt{16-x^2} and whose cross-sections perpendicular to the x-axis are squares with the sides on the base.

    ok I started of by graphing it then i get
    Volume= \int_{-4}^4 A(x) dx

    then after that I don't know what to do.

    *edit**

    I tried this numerous times and I think I got it. Tell me if this is the correct answer: \frac{256}{3}
    Last edited by yoman360; October 22nd 2009 at 07:28 PM.
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