*Note: I will use two different ways to solve the area of hexagon.
Use the Area formula of Hexagon:
A=3√3/2 × s²
A=3√3/2 × 390²
Use the formula for Area of a regular polygon:
*Note: n is the number of side of a polygon and s is the length of side.
Since our polygon is hexagon and has 6 sides, our n is 6.
The Area of Hexagon is 395167.4 cm².