package areacirculo;
import java.util.Scanner;
public class AreaCirculo {

    public static void main(String[] args) {
        // TODO code application logic here
         double radio, area;         
         System.out.print("Ingresa el radio r = ");
         Scanner scanner = new Scanner(System.in);
         radio = scanner.nextFloat();
         area =  (3.14159*radio*radio);            
         System.out.println("Area = " + area);  
    }

}