[tex]p = 3 \times l = 3 \times 6 = 18[/tex]
[tex]h = \frac{l \sqrt{3} }{2} = \frac{6 \sqrt{3} }{2} = 3 \sqrt{3} [/tex]
[tex]r = \frac{l \sqrt{3} }{3} = \frac{6 \sqrt{3} }{3} = 2 \sqrt{3} [/tex]
[tex]apotema = \frac{l \sqrt{3} }{6} = \frac{6 \sqrt{3} }{6} = \sqrt{3} [/tex]
[tex]aria = \frac{ {l}^{2} \sqrt{3} }{4} = \frac{ {6}^{2} \sqrt{3} }{4} = \frac{36 \sqrt{3} }{4} = 9 \sqrt{3} [/tex]
