s=\frac{\sqrt{3}}{4}*a^{2}=\frac{\sqrt{3}}{4}*12^{2}=\frac{\sqrt{3}}{4}*144=36\sqrt{3}
s=ah/2
s=12*6√3/2=36√3
s=\frac{\sqrt{3}}{4}*a^{2}=\frac{\sqrt{3}}{4}*12^{2}=\frac{\sqrt{3}}{4}*144=36\sqrt{3}
s=ah/2
s=12*6√3/2=36√3