Răspuns :
[tex]l = 2 \sqrt{12} + \sqrt{3} [/tex]
[tex]l = 2 \times 2 \sqrt{3} + \sqrt{3} [/tex]
[tex]l = 4 \sqrt{3} + \sqrt{3} [/tex]
[tex]l = 5 \sqrt{3} \: cm[/tex]
[tex]A = {l}^{2} [/tex]
[tex]A = {(5 \sqrt{3}) }^{2} [/tex]
[tex]A = 75 \: {cm}^{2} [/tex]
[tex]l = 2 \times 2 \sqrt{3} + \sqrt{3} [/tex]
[tex]l = 4 \sqrt{3} + \sqrt{3} [/tex]
[tex]l = 5 \sqrt{3} \: cm[/tex]
[tex]A = {l}^{2} [/tex]
[tex]A = {(5 \sqrt{3}) }^{2} [/tex]
[tex]A = 75 \: {cm}^{2} [/tex]