[tex]A= \frac{l^{2} \sqrt{3}}{4} , 27= \frac{l^{2} \sqrt{3}}{4} , l= \frac{ 27*4}{ \sqrt{3} } = \frac{108}{ \sqrt{3} } , \frac{108}{ \sqrt{3} }^{ \sqrt{3} } =\frac{ 108 \sqrt{3} }{3} = 36 \sqrt{3} [/tex]
[tex]A= \frac{ l^{2} \sqrt{3} }{4} , A= \frac{108 \sqrt{3} \sqrt{3}}{4} = \frac{ 108*3}{4} = \frac{324}{4} = 81[/tex][tex]l=36 \sqrt{3}, 3l= 3*36 \sqrt{3} = 108\sqrt{3} [/tex][tex]cm^{2} [/tex]
