Cześć!
Obliczenia
[tex]\text{P}=6\cdot\frac{a^2\sqrt3}{4}\\\\a=6\sqrt5\\\\\text{P}=6\cdot\frac{(6\sqrt5)^2\cdot\sqrt3}{4}=6\cdot\frac{6^2\cdot(\sqrt5)^2\cdot\sqrt3}{4}=6\cdot\frac{36\cdot5\cdot\sqrt3}{4}=6\cdot\frac{180\sqrt3}{4}=6\cdot45\sqrt3\\\\\huge\boxed{\text{P}=270\sqrt3 \ [ \ j^2 \ ]}[/tex]
