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Math Help - Volume question

  1. #1
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    Volume question

    Im having a bit of problem with the following question:

    Find the volume of the solid obtained by rotating the region bounded by the curves y=0, y= sinx, 0<=x<=pi; about the line y=-2

    Im not exactly sure how to solve it with it being bounded by 3 curves
    help please?
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  2. #2
    Junior Member bondesan's Avatar
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    Sketch the situation like this:

    Volume question-esquema.jpg

    Then use de disk method to find the volume. Try to imagine you looking at the top of the solid. Write down the integral and evaluate.
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