What is the area (in sq cm) of a regular hexagon of side 14 cm?

Answer: Option D

$$\begin{array}{rl}& \text{Area of the hexagon}\\ & \Rightarrow 6\times \frac{\sqrt{3}}{4}\times a^2\\ & \Rightarrow 6\times \frac{\sqrt{3}}{4}\times 14\times 14\\ & \Rightarrow 294\sqrt{3}\end{array}$$