package day2;
public class Q1 {
	private double r=1.0;
	private String color="red";

	Q1()
	{
	}
	Q1(double r)
	{

	}
	double getred()
	{
	    return r;
	}
	double getarea()
	{
		double area=3.14*r*r;
		return area;
	}
	public static void main(String arg[])
	{
		Q1 c=new Q1();

		System.out.println(c.getarea());

	}


}