Write a program that calculates the area of a circle, use data type of double.

Category : Java | Sub Category : Data type, Variable and Arays | By Prasad Bonam Last updated: 2020-09-28 08:53:18 Viewed : 586

Write a program that calculates the area of a circle, use data type of double.

DESCRIPTION: In this program first declare a class name Area and show main program and than I declare pi r and b and delare value of r and pi after we declare how area found after this in system.out.println line it gives us the value of area

Source Code:

/**

 *

 * Write a program that calculates the area of a circle, use data type of double.

 *

 */

public class Area { // This line daclare a new class & the class defination is start.

     public static void main(String a[]) { // This line begins the main() method.

         double pi, r, b; // daclere three variable of type double.

         r = 12.3993; // radius of circle.

         pi = 3.1416; // value of pi

         b = pi * r * r; // Declare area formula.

         System.out.println("Area of the circle is " + b); // This print the area of circle.

     }

}

 

OUTPUT: