Write a program that reads in the radius of a circle and the compute and display the diameter, circumference and area. Use the constant value 3.14159 for ( pi ) π .

Java Codes

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Write a program that reads in the radius of a circle and the compute and display the diameter, circumference and area. Use the constant value 3.14159 for ( pi ) π . 

Code:

import java.util.Scanner;

public class MachineProblem4 {

    public static void main(String[] args) {

       

        Scanner input_user = new Scanner(System.in);

       

        int radius,diameter;

        double PI,circum,area;

       

        System.out.print("Enter radius: ");

        radius = input_user.nextInt();

       

        PI = 3.14159;

        diameter = radius * 2;

        circum = PI * diameter;

        area = PI * (radius * radius);

       

        System.out.println("******************************************");

        System.out.println(" Diameter --------> " + diameter );

System.out.println("******************************************");

        System.out.println(" Circumference ---> " + circum);

System.out.println("******************************************");

        System.out.println(" Area ------------> " + area);

        System.out.println("******************************************");

       

    }

}