[tex]aire = \sqrt{ \frac{3}{4} } \times {a}^{2} \\ = \sqrt{ \frac{3}{4} } \times 36 \\ = 36 \times \frac{ \sqrt{3} }{ \sqrt{4} } \\ = \frac{36 \sqrt{3} }{ \sqrt{4} } \\ [/tex]
[tex] = \frac{6 \times 2 \times 3 \times \sqrt{3} }{2 \sqrt{2} } \\ = \frac{18 \sqrt{3} }{ \sqrt{2} } \\ = \frac{18 \sqrt{3} \times \sqrt{2} }{ \sqrt{2} \times \sqrt{2} } \\ = \frac{18 \sqrt{6} }{2} \\ = [/tex]
