[tex]R = \frac{a\sqrt{3}}{3}\\oraz\\R = 2\sqrt{3}\\\\\frac{a\sqrt{3}}{3} = 2\sqrt{3} \ \ /\cdot3\\\\a\sqrt{3} = 6\sqrt{3} \ \ /:\sqrt{3}\\\\a = 6[/tex]
[tex]a)\\r = \frac{a\sqrt{3}}{6} = \frac{6\sqrt{3}}{6} = \sqrt{3}\\\\b)\\h = \frac{a\sqrt{3}}{2} = \frac{6\sqrt{3}}{2} = 3\sqrt{3}\\\\c)\\P = \frac{a^{2}\sqrt{3}}{4} = \frac{6^{2}\sqrt{3}}{4}=\frac{36\sqrt{3}}{4} = 9\sqrt{3}[/tex]
