A Java program that will find the Area and Circumference of a circle

import java.util.Scanner;

class CircleDemo

{

static Scanner sc = new Scanner(System.in);

public static void main(String args[])

{

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

/*We are storing the entered radius in double

* because a user can enter radius in decimals

*/

double radius = sc.nextDouble();

//Area = PI*radius*radius

double area = Math.PI * (radius * radius);

System.out.println("The area of circle is: " + area);

//Circumference = 2*PI*radius

double circumference= Math.PI * 2*radius;

The output should look like this

Enter the radius: 1

The area of circle is: 3.141592653589793

The circumference of the circle is: 6.283185307179586

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