Question

14
AABC and ADEF both are equilateral triangles.
AAABC): ACADEF)=1:2. If AB = 4, then what is
the length of DE?
(A)22 (B) 4 (0) 8 (D) 42.
D​

Answer 1

Answer:

Both are equilateral triangle so angle between them is 60°.

It's sufficient to make 2 tariangles similar.

For similar Triangle,

Area of ABC/Area of DEF=(AB)^2/(DE)^2=(BC)^2/(EF)^2=(AC)^2/(DF)^2