import java.util.Scanner;

public class ComputeArea {

	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		
		//ask the user for a value
		System.out.print("Enter the radius: ");
		
		//read the value
		double radius = input.nextDouble();
		System.out.println("Radius = " + radius);
	}

}