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Math Help - volume tricky problems

  1. #1
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    i need helping figuring out the work behind this to get the required answer. the correct answer is given. ive been at these problems for a couple hours now. plz help
    Last edited by mr fantastic; January 30th 2009 at 09:10 PM. Reason: Merged posts
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  2. #2
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    Quote Originally Posted by ahawk1 View Post
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    i need helping figuring out the work behind this to get the required answer. the correct answer is given. ive been at these problems for a couple hours now. plz help
    I'd do it by translating the curve (and therefore the region) 1 unit to the left and then rotating around the y-axis .....
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