A = [tex] \frac{l^{2} \sqrt{3} }{4} [/tex]
3√3 = [tex] \frac{l^{2} \sqrt{3} }{4} [/tex] (inmultim mezii cu extremii)
12√3=l²√3
l² = [tex] \frac{ 12\sqrt{3} }{ \sqrt{3} } [/tex]
[tex] l^{2} [/tex] = 12
l = [tex] \sqrt{12} [/tex]
l= 2[tex] \sqrt{3} [/tex]
h= [tex] \frac{l \sqrt{3} }{ 2 } = \frac{2 \sqrt{3} \sqrt{3} }{2} = \frac{6}{2} = 3 cm [/tex]
