Question

find below answer please ​

Answer 1

Answer:

In ∆ABC and ∆DAC

angle ABC = angle ACD (given)

angle C = angle C

By AA, ∆ABC is similar to ∆DAC

By CPST,AB/AD=AC/DC

5/4=3/DC

DC=12/5

By CPST,AB/AD = BC/AC

5/4=BC/3

BC=15/4

Ratio of areas is (5/4)^2

= 25/16