Answers

2015-07-30T16:20:17+05:30
As per Apollonius theorem,
If AD is the median drawn on the side BC of a triangle ABC, then
AB²+AC² = 2(AD²+BD²)      ............(1)
Same way,
If BE is the median drawn on the side AC of a triangle ABC, then
AB²+BC² = 2(CE²+BE²)     ............(2)

and 

If CF is the median drawn on the side AB of a triangle ABC, then
AC²+BC² = 2(AF²+CF²)    ............(3)

Add the equations (1), (2) and (3) and simplify to get the answer.
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