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Math Help - Need help finding volume by cylindrical shells or disk(washers)

  1. #1
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    Feb 2009
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    Need help finding volume by cylindrical shells or disk(washers)

    The directions are use the best method available to find each volume.

    The problem:
    The region bounded by y=x+2, y=-x-2, and x=0 revolved about (a) y=-2 and then (b) the y-axis

    i am having alot of trouble with problems like these. Please help if you can.

    thanks
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  2. #2
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    Feb 2009
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    so i got some help and came up with 16pi for the first part and 16pi/3 for the second part. Could someone check this for me?
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