Question

Într-un triunghi echilateral aria=64 radical din 3. Aflați perimetrul.

Answer 1

l²√3/4=64√3 unitati arie
l²/4=64
l²=4*64
l=2*8=16
Perim=3l=3*16=48 unitati lungime

Answer 2

$\mathcal{A}=64\sqrt{3} \\ \\ \frac{l^2\sqrt{3}}{4}=64\sqrt{3} \\ \\ l^2\sqrt{3}=256\sqrt{3} \\ \\ l^2=256 \\ \\ l=16 \\ \\ \mathcal{P}=3\cdot l=3\cdot16=48$