Q. 44.1( 28 Votes )
In ΔABC, point M is the midpointof side BC.
If, AB2 + AC2 = 290 cm2,AM = 8 cm, find BC.
Answer :
Given AB2 + AC2 = 290 cm2,AM = 8 cm, BM = MC
According to formula,
AM2 = 
⇒ 64 = 
⇒ 64 – 
⇒ BC2 = 324
BC = 18.
Thus BC = 18 cm.
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