Java: Create the area of a pentagon

Last update on March 11 2025 11:08:31 (UTC/GMT +8 hours)

Calculate Pentagon Area

Write a Java method to create a pentagon's area.

Pictorial Presentation:

Sample Solution:

Java Code:

import java.util.Scanner;
public class Exercise14 {
 
  public static void main(String[] args) {

        Scanner input = new Scanner(System.in);
        System.out.print("Input 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 " + pentagon_area(n, side));
    }

    public static double pentagon_area(int n, double s) {
        return  (n * s * s) / (4 * Math.tan(Math.PI/n));
    }
}

Sample Output:

Input the number of sides: 5                                                                                  
Input the side: 6                                                                                             
The area of the pentagon is 61.93718642120281

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to calculate the area of a regular pentagon using its side length and apothem.
• Write a Java program to compute the area of a pentagon by dividing it into five triangles and summing their areas.
• Write a Java program to determine the area of a pentagon given its perimeter and apothem.
• Write a Java program to calculate the area of an irregular pentagon given the coordinates of its vertices.

Java Code Editor:

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