Exercise04_04.java

package ch_04;

import java.util.Scanner;

/**
 * 4.4 (Geometry: area of a hexagon) The area of a hexagon can be computed using the
 * following formula (s is the length of a side):
 * Area =
 * 6 * s2
 * 4 * tan¢ p6 ≤
 * Write a program that prompts the user to enter the side of a hexagon and displays
 * its area. Here is a sample run:
 * Enter the side: 5.5
 * The area of the hexagon is 78.59
 */
public class Exercise04_04 {
    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);

        System.out.println("Enter the side length of a hexagon: ");

        double side = input.nextDouble();

        double area = (6 * Math.pow(side, 2)) / (4 * Math.tan(Math.PI / 6));

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

    }
}