Question

1. In A ABC, DE || BC and
if AC = 4.8 cm find AE.
BD​

Answer 1

Given that

DE//BC,AD/DB =3/5 and AC=4•8cm

Since ABC is a triangle.

AB=AD+DB=3+5=8cm.

AC=4•8cm

So using Thales theorem,

AB/DB=AC/AE

8/3=4•8/AE

AE=4•8×3/8

= 0•6×3

=1•8cm