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Math Help - Determining right circular cylinders volume!!

  1. #1
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    Exclamation Determining right circular cylinders volume!!

    Determine the right circular cylinder of greatest volume that can be inscribed upright in a right circular cone of radius 4 and height 8.
    I couldn't get the right answer, pls help.
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  2. #2
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    Re: Determining right circular cylinders volume!!

    Could you post your work?
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    Re: Determining right circular cylinders volume!!

    Oops!
    Last edited by cshanholtzer; March 25th 2012 at 04:16 PM.
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    Re: Determining right circular cylinders volume!!

    V = \pi r^2 h

    V = \pi x^2(8 - 2x)

    find \frac{dV}{dx} and maximize
    Attached Thumbnails Attached Thumbnails Determining right circular cylinders volume!!-cylcone.jpg  
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    Re: Determining right circular cylinders volume!!

    Thanxx aloot i got the right answer however i didn't get the part you found y.
    Last edited by ftmtmr; March 25th 2012 at 06:08 PM.
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