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Math Help - using cylindrical shells

  1. #1
    Senior Member
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    using cylindrical shells

    ok im not sure where i went wrong, but im getting a negative answer for volume which cant be right...any thoughts? thanks in advance...IMG.pdf
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  2. #2
    Senior Member
    Joined
    Aug 2009
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    ok i redid the problem and got an answer of 84 pi, can someone check my answer to see if they got the same thing. i apologize i was tired when i did this problem last night. haha im much better now. :O) thanks in advance!

    so again my final answer was 84 pi can anyone confirm? thanks
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