Question

Given ΔABC ~ ΔDEF,find arΔABC / arΔDEF

Answer 1

Construct AP In ∆ABC and In ∆DEF,DQ as height
∆ABC~∆DEF
A(∆ABC)/A(∆DEF) =1/2× BC ×AP/ 1/2 ×EF×EQ
=BC×AP/EF×EQ