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    idnof's Avatar
    idnof Posts: 1, Reputation: 1
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    #1

    Apr 4, 2008, 08:34 AM
    Do I use the P=2l+2w with another formula
    An indoor physical-fitness room consists of a rectangular region with a semicircle on each end . The perimeter of the room is to be a 200-meter running track. What measurements will produce a maximum area of the rectangle?
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Apr 4, 2008, 03:34 PM
    Do you have any other dimensions you forgot? Just checking.

    The perimeter is

    The area is

    You could solve P for y and sub into A, then differentiate, set to 0 and solve for r.
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