Question

A ABC and A DEF are equilateral triangles. If A(A ABC) A(A DEF) 1 2 and AB - 4, then what is the length of DE ?​

Answer 1

I m not sure
but this will help u

Answer 2

Answer:

Step-by-step explanation:DE² is 32

As ar(ABC)/ar(DEF) =1/2.AND AB²/DE²=1/2

16/DE²=1/2

DE²=32

DE=ROOT32