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Math Help - Finding the volume of a solid.

  1. #1
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    Finding the volume of a solid.

    Let S be the solid of revolution obtained when the region bounded by 0<x<Pie and sin(x)<y<2sin(x) is rotated around the line y=3. Find the volume of S.
    I just need an integral I do not know where to start?
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  2. #2
    MHF Contributor Calculus26's Avatar
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    See attachment
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  3. #3
    MHF Contributor Calculus26's Avatar
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    In general when using disks and washers, to get started put in a representaitve rectangle and rotate it about the axis of rotation.

    then determine the inside and outside radii of the washer or the radius of the disk
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