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Math Help - Calculus 1 Word Problem

  1. #1
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    Calculus 1 Word Problem

    I have no idea how to approach this problem, anyone have any pointers?
    I know the area of a half circle is a=(pi)r^2/2
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  2. #2
    MHF Contributor Calculus26's Avatar
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    See Attachment

    When you learn the differential we can do this problem in 3lines

    and 2 minutes
    Attached Files Attached Files
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  3. #3
    MHF Contributor Calculus26's Avatar
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    Note I worked the problem for a full disk

    I'll let you make the adjustment ( divide the original eqn by2)
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