Answers for "java code for area of circle"

Java program to calculate area of a circle

import java.util.Scanner;
public class CalculateAreaOfCircle
{
   public static void main(String[] args)
   {
      double radius;
      double pi = 3.1415, area;
      Scanner sc = new Scanner(System.in);
      System.out.println("Please enter radius of circle: ");
      radius = sc.nextDouble();
      area = pi * radius * radius;
      System.out.println("Area of circle: " + area);
      sc.close();
   }
}

area of circle in java

import java.util.Scanner;
public class AreaOfCircle {
   public static void main(String args[]){
      int radius;
      double area;
      Scanner sc = new Scanner(System.in);
      System.out.println("Enter the radius of the circle ::");
      radius = sc.nextInt();
      area = (radius*radius)*Math.PI;
      System.out.println("Area of the circle is ::"+area);
   }
}

Area of a Circle in Java Programming

import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        double R,A;
        Scanner sc = new Scanner(System.in);
        R = sc.nextDouble();
        A = 3.14159 * R * R;
        System.out.printf("A=%.4f\n",  A);
   }
}