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Circular Fun (Posted on 2005-07-28) Difficulty: 2 of 5
When you draw three circles of radius r such that all three are externally tangent, what is the area of the shape in the center in terms of r?

See The Solution Submitted by Justin    
Rating: 3.2857 (7 votes)

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"externally tangent"=? | Comment 7 of 18 |
Confused me.  I would have worded the problem, "What is the area of the inner triangle-like region formed when three circles are placed tightly together?"
  Posted by Jason Taylor on 2005-07-30 03:07:20
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