See complete Problem 197 at:
www.gogeometry.com/problem/p197_triangle_area_side_inradius_exradius.htm
Area of a Triangle, Side, Inradius, and Exradius. Level: High School, SAT Prep, College geometry
Post your solutions or ideas in the comments.
Saturday, October 25, 2008
Elearn Geometry Problem 197: Triangle area
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referring to Elearn Geometry Problem 195,
ReplyDeleteS=sr=(s-a)r_a
S=(S/r-a)r_a
S=arr_a/(r_a-r)