Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

6 circles problem

  1. Jul 8, 2008 #1


    User Avatar

    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


    User Avatar

    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.

    Attached Files:

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook