daire.java

import java.util.Scanner;

public class daire {
 public static void main(String[] args) {
 
 System.out.println("Yaricap:");
 double r,pi=3.14;
 Scanner sc = new Scanner(System.in);
 r= sc.nextDouble();
 double perimeter = 2*pi*r;
 double area = pi*r*r;

 System.out.println("Alan = "+ area);
 System.out.println("Cevre = "+ perimeter);
 sc.close();
 System.exit(0);
 }
}