Question

Que-4.........Tomorrow is my paper plss help fast

Answer 1

Answer:

ar(∆DEF)/ar(∆ABC) = 25/4

Step-by-step explanation:

if ratio of two sides of two similar are given, then ratio of there any other two sides and ratio of perimeter of these two triangles will be same, but the ratio of the area of these two triangles become the square of the ratio of the sides of triangles......it is a rule.

so, in this question it is given that,

∆ABC~∆DEF

BC/EF = 2/5

so, EF/BC = 5/2

and ar(∆DEF)/ar(∆ABC) = (5/2)² =25/4