Answers

The Brainliest Answer!
2016-03-21T14:01:41+05:30
By given,
BD=3 cm
CD=4 cm
BY similarity criterion,
ΔBAC≈ΔBAD
Thus, \frac{BC}{BA} = \frac{BA}{AD}
SO,7AD=BA²-----------------------(1)
SImilarly,ΔDAC≈ΔBAC
Thus, \frac{BA}{AD}= \frac{BC}{AC}
SO,7AD=4BA
that gives BA=4cm
thus 7AD=4x4=16cm
AD=16/7=2.3cm
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