Question

what will be the lenght of side of an equilaterale tringangle whose area is 9 under root 3

Answer 1

area of equilateral triangle is √3/2 × a^2 = 9√3
${a}^{2} = 9 \sqrt{3} \times \frac{2}{ \sqrt{3} }$
${a}^{2} = 18$
$a = \sqrt{18}$
$a = 3 \sqrt{2}$