Salut!
Răspuns: 12 ✅
Formula:
[tex] \red{\bf \: h_{triunghi \: echilateral} = \frac{l \sqrt{3} }{2} }[/tex]
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Notăm cu:
[tex] \bf \: h = 6 \sqrt{3} [/tex]
[tex] \bf 6 \sqrt{3} = \frac{l \sqrt{3} }{2} = > 6 \sqrt{3 } \times 2 = l \sqrt{3} [/tex]
[tex] \bf 12 \sqrt{3} = l \sqrt{3} | \div ( \sqrt{3} )[/tex]
[tex] \bf\red{l = 12}[/tex] ✔
