public void setName(String name){
public class Circle:Shape{
public Circle(String name, double rad){
public void setR(double rad){
double area = Math.PI * rad * rad;
double ar = Math.Round(area, 3);
public static void Main()
Circle c1 = new Circle();
Console.WriteLine("Name is {0}, Radius is {1} ,Area is {2} " ,c1.getName(),c1.getR(), c1.getArea());
Console.WriteLine("\n Next OBJ \n");
Circle c2 = new Circle("Circle 2", 4.4);
Console.WriteLine("Name is {0}, Radius is {1} ,Area is {2} " ,c2.getName(),c2.getR(), c2.getArea());