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Thread: interesting problem

  1. #1
    Senior Member sfspitfire23's Avatar
    Oct 2009

    interesting problem

    Given two circular swimming pools each of radius 3 meters, if the center of each circle is on the circumference of other circle, find the perimeter of the swimming pool?

    So, 12pi is the perimeter of both pools....but im not sure where to go from there.
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  2. #2
    Junior Member
    Jul 2010
    Edit: My original post was too rash. I apologize.

    Someone can delete this post now.
    Last edited by elemental; Jul 28th 2010 at 08:35 AM.
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  3. #3
    Junior Member bondesan's Avatar
    Jul 2010
    interesting problem-circle3.jpg

    The triangle is equilateral, you know the angle, then you can find the red arc. Subtract it two times from the perimeter of one circle to find half perimeter of the pool, then multiply it by two to get entire perimeter of the pool.
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