Introduction
In this demo I have used NetBeans IDE 8.2 for debugging purpose. But you can use any java programming language compiler as per your availability..
Write a Java method to find the area of a pentagon
import java.util.Scanner;
public class Javaexcercise {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Enter the number of sides: ");
int n = input.nextInt();
System.out.print("Input the side: ");
double side = input.nextDouble();
System.out.println("The area of the pentagon is " + pentagonarea(n, side));
}
public static double pentagonarea(int n, double s) {
return (n * s * s) / (4 * Math.tan(Math.PI/n));
}
}
Result
