//
//	Review for Java
//
//	Goal: read in the radius and out the circle's area
//

import java.util.Scanner;

public class CircleArea
{
	public static void main(String[] args)
	{
		Scanner input = new Scanner(System.in);
		System.out.println("Type in the radius: ");	// prompt
		double radius = input.nextDouble();							// input
		double area = 3.14 * radius * radius;
		System.out.println("Area = " + area);
	}
}