Question

let ∆ABC~∆DEF and their areas be respectively 64cm2 and 121cm2.if EF=15.4cm find BC​

Answer 1

Step-by-step explanation:

$8 \times 15.4 \div 11 = 11.2$

may my answer of this question proves helpful

Answer 2

Answer:

here is your answer

we have studied theorm: area of similar triangles

The ratio of the areas of two similar triangles is equal to their square of the ratio of their corresponding sides.

Therefore.

Area of∆ABC/Area of ∆DEF=BC/EF

64/121=(BC/15.4)^2

64/121=BC/237.16

BC×121=15178.24

BC=15178.24/121

BC=125.44cm