//program for calculate Area and circumference of a circle.
package r4r.co.in;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class NewClass {

    public static void main(String[] args) throws IOException {
        BufferedReader d = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Enter the Radius of circle:");
        String s = d.readLine();
        int n1 = Integer.parseInt(s);

        //Code for Circle

        float a = (float) (3.14 * n1 * n1);
        System.out.println("Area of the circle:" + a);
        float b = (float) (2 * 3.14 * n1);
        System.out.println("circumference of a circle:" + b);

    }
}