The area of a regular hexagon of side 2√3 cm is:

Answer: Option A

A regular hexagon consists of 6 equilateral triangle
Area of regular hexagon
$$\begin{array}{rl}& =6\times \frac{\sqrt{3}}{4}\times {\left(\text{side}\right)}^3\\ & =6\times \frac{\sqrt{3}}{4}\times a^2\\ & =6\times \frac{\sqrt{3}}{4}\times {\left(2\sqrt{3}\right)}^2\\ & =6\times \frac{\sqrt{3}}{4}\times 12\\ & =18\sqrt{3}\text{ c}{\text{m}}^2\end{array}$$