Question

ABC and def are two similar triangles and their perimeter is 30cm and 18cm respectively. If bc=9find EF

Answer 1

Answer:

ABC and def are the similar triangle given and BC=9 that's BC and EF are the same side of similar triangles.

:BC and EF =9

Answer 2

Perimeter of ∆ABC=30

Perimeter of ∆DEF =18

Side EF = x

30/18=BC/EF

30/18=9/x

18×9=x×30

x=5.4