Question

In the given figure if BC=3cm, BD=7cm,then A(∆ABC)/A(∆ABD)?

Answer 1

Answer:

For similar triangles

(

EF

BC

)

2

=

ArΔDEF

ArΔABC

(

4

3

)

2

=

ArΔDEF

54

Ar(ΔDEF)=54×

9

16

=96cm

2