PROGRAMACIÓN PARA TODOS

(NetBeans)

package calcularareac;
import java.util.Scanner;
public class CalcularAreaC {
public static void main(String[] args) { 
// TODO code application logic here double radio,area; Scanner      Scanner = new Scanner(System.in); System.out.print("Ingrese el radio: "); radio = Scanner.nextFloat(); area = (3.141559*radio*radio); System.out.print("Area es igual a: " + area); }
}