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6 circles problem

  1. Jul 8, 2008 #1

    KKW

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    If you inscribe 4 circles inside a bigger circle and then add another smaller circle, touching the other 4 circles, what is the radius of the smallest circle (in the centre) if the radius of the biggest circle is 10cm?
     
  2. jcsd
  3. Jul 8, 2008 #2
    Is the radius of the four circles the same?
     
  4. Jul 8, 2008 #3

    Borek

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    Staff: Mentor

    Assuming four circles are identical, that's everything you may need. Think how these are related to the radii of circles in question.
     

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