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-   -   Free math tutorial answer my question? (https://www.askmehelpdesk.com/showthread.php?t=562682)

  • Mar 16, 2011, 06:36 AM
    jadexzee
    Free math tutorial answer my question?
    Suppose an orange to be a perfect sphere whose diameter is 3in, and suppose that the skin is of uniform thickness 1/8 in, and that the juice of the orange is uniformly distributed throughout its meat. Find the depth of a slice cut from the outside that will contain as much juice as a slice whose bases are parallel section 1/8 in from the center.
  • Mar 16, 2011, 06:50 AM
    J_9

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  • Mar 16, 2011, 10:34 AM
    galactus
    1 Attachment(s)

    I assume this is what you're describing?:

    The section 1/8th inch on either side of the x-axis must be the same as the segment with height h?

    Assuming I am interpreting correctly, find the volume of the slice in the center of the orange.

    We can find this by using calculus.

    The slices have a base which is bounded by









    Integrate to find the volume of the 1/4 inch slice at the center (1/8th inch above and below the center)

    Then, to find the volume of the segment, integrate from h to 3 instead of -1/8 to 1/8. Set this result equal to the volume from the first integral above, solve for h.

    I just used 3 inches as the radius of the orange. You may have to adjust to take the skin into account.

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