[tex]h = \frac{a\sqrt{3}}{2} \ \ /\cdot 2\\\\a\sqrt{3} = 2h \ /:\sqrt{3}\\\\a = \frac{2h}{\sqrt{3}}[/tex]
[tex]a)\\h = 3\\\\a = \frac{2\cdot3}{\sqrt{3}} = \frac{6}{\sqrt{3}}\cdot\frac{\sqrt{3}}{\sqrt{3}} = \frac{6\sqrt{3}}{3} = 2\sqrt{3}\\\\\\b)\\h = \sqrt{2}\\\\a = \frac{2h}{\sqrt{3}}=\frac{2\cdot\sqrt{2}}{\sqrt{3}}\cdot\frac{\sqrt{3}}{\sqrt{3}} = \frac{2\sqrt{2\cdot3}}{3} = \frac{2\sqrt{6}}{3}\\\\\\c)\\h = 7\sqrt{3}\\\\a = \frac{2h}{\sqrt{3}} = \frac{2\cdot7\sqrt{3}}{\sqrt{3}} = 14[/tex]
