Question

Un triunghi echilateral are latura 6 m .Aria lui este egala cu ...m la a doua

Answer 1

Arie triunghi echilateral = $\frac{l^2 \sqrt{3} }{4} = \frac{36 \sqrt{3} }{4} =9 \sqrt{3}$

Answer 2

$A = \frac{ l^{2} \sqrt{3}}{4} = \frac{ 6^{2} \sqrt{3} }{4} = \frac{36 \sqrt{3} }{4} =9 \sqrt{3} ~ cm^{2}$