Area of a hexagon

The problem

Write a program that prompts the user to enter the side of a hexagon and displays its area. The formula for computing the area of a hexagon is

Area = 3 Sqrt 3 / 2 s ^ 2

where s is the length of a side. Here is a sample run:

Enter the side: 5.5
The area of the hexagon is 78.5895

Breaking it down

public static void main(String[] Strings) {

    Scanner input = new Scanner(System.in);

    System.out.print("Enter the side: ");
    double side = input.nextDouble();
    
    input.close();

    double area = areaOfHexagon(side);

    System.out.println("The area of the hexagon is " + area);

}

private static double areaOfHexagon(double side) {
    double area = 3 * 1.732 * side * side / 2;
    return area;
}

Output

Enter the side: 10
The area of the hexagon is 259.79999999999995