Respuesta :

Banabanana
Сorrect statements:
1. EF is the longest side

2. DF = 6 cm (in a 30-60-90  triangle the side opposite the 30 degree angle is half the length of the hypotenuse. )

3. By the Pythagorean theorem:
DE = √(12²-6²) = √(144-36) = √108 = 6√3
DE = 6√3 cm