import Mypack.Lab23; 
class Circle 
{ 
public static void main(String... Y) 
{ 
Lab23 x=new Lab23(); 
x.m1(5); 
} 
} 
 
package Mypack; 
public class Lab23 
{ 
public void m1(int r) 
{ 
double pi=3.14,area; area=pi*r*r; 
System.out.print("area of circle="+area); 
} }