Question

In ∆ABC,point m is the midpoint of side BC. If,Ab²+AC²=290cm² AM=8cm, find BC.

Answer 1

By using apollonius theorem
AB(square)+ac(square)=2AM(square)+BM(square)
Using above formula put values sorry it can't possible for me to write *square on number so i write in bracket understand plz

Then ur solution of this is BM=9

Then do double of that because it's perpendicular
BC=BM multiple by 2
U will get BC =18cm