Question

∆ ABC ~ ∆ ADE, DE || BC , if AD=1 cm and BD = 2 cm then the ratio of the area of ∆ ABC to the area of
∆ ADE is ?

Answer 1

DB = 2cm
AD=BC
= 1 cm
4cm - 1cm
3cm
∆ADE = 1/2 × 3cm × 1cm
∆ADE= 1/5cm
= 1 . 5 cm