import java.io.*;

class CircleApp 

{
	// ----- FIELDS -----
	
	// Create Buffered Reader class instance 
	
	static InputStreamReader input = new InputStreamReader(System.in);
	static BufferedReader keyboardInput = new BufferedReader(input);
	
	// ----- METHODS -----
	
	
	public static void main(String[] args) throws IOException
	
	{
		double radius;
		
		// input
		
		System.out.print("Input a radiaus(double): ");
		radius = new Double(keyboardInput.readLine()).doubleValue();
		
		// create new circle instance
		
		Circle newCircle = new Circle(radius);
		
		// calculate circumreference and area
		
		newCircle.calcCircleCircum();
		newCircle.calcCircleArea();
				
		// output result
		
		newCircle.outputCircAndArea();
		
			
	}
	
}