Question

find the perimeter of an equilateral triangle whoes area is 81$\sqrt3cm2$

Answer 1

Answer:

I hope it is right and pls follow me

Step-by-step explanation:

P≈41.03

Answer 2

Good Morning!!

$area=\frac{\sqrt{3}a^2}{4} \\ \\ 81\sqrt{3}=\frac{\sqrt{3}a^2}{4} \\ \\ cancel \: root \: 3 \: from \: both \: sides \\ \\ 81=\frac{a^2}{4} \\ \\ a^2=81×4 \\ \\ a=\sqrt{324} \\ \\ a=18 \\ \\Perimeter =18×3=54cm \\ Hope \: this \: helps \: you:)$