Question

∆ABC~∆DEF . If A(∆ABC) :A(∆DEF) =16:25.BC=2.2cm then find EF​

Answer 1

Answer:

2.75 cm

Step-by-step explanation:

area of ∆ABC/ area of DEF= ( BC/ EF) ²

16/25= (2.2)²/EF²

EF²= 4.84*25/16

EF²= 121/16

EF=√121/16

EF= 11/4 = 2.75cm