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Circle with diameter X and I twist the circle into a figure eight

  1. Aug 8, 2009 #1
    If I had a circle with diameter X and I twist the circle into a figure eight how could I calculate the diameter of one of the resulting approximate circles?
     
  2. jcsd
  3. Aug 8, 2009 #2

    tiny-tim

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    Hi LitleBang! :wink:

    Well, each approximate circle has half the circumference of the original circle,

    and if the circumference is halved, then the diameter is … ? :smile:
     
  4. Aug 10, 2009 #3

    HallsofIvy

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    Re: Circle

    Notice that the total area of the two circles forming the figure 8 is NOT the same as the area of the original circle! But the total circumference is the same as the circumference of the original circle.
     
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