Răspuns :
[tex]\displaystyle\bf\\P=24~cm\\\\L=\frac{P}{3}=\frac{24}{3}=8~cm\\\\A=\frac{L^2\sqrt{3}}{4}\\\\A=\frac{8^2\sqrt{3}}{4}\\\\A=\frac{64\sqrt{3}}{4}\\\\\boxed{\bf~A=16\sqrt{3}~cm^2}[/tex]
Răspuns:
Explicație pas cu pas:
P=3l P=24cm L=24:3=8cm
A=l²√3/4=64√3/4=16√3cm²