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Inradius and Perimeter (Posted on 2008-02-26) Difficulty: 3 of 5
Show that a triangle's perimeter is more than 10 times the radius of its incircle.

  Submitted by Praneeth    
Rating: 4.0000 (2 votes)
Solution: (Hide)
Thanks to Charlie for suggesting a better inequality.
Here is the solution by Daniel

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Solutiona solutionDennis2008-02-26 14:33:10
re: computer exploration -- not proof -- spoiler -- finer gridCharlie2008-02-26 12:27:11
Solutioncomputer exploration -- not proof -- spoilerCharlie2008-02-26 12:17:43
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