/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static class AreaPiscina {
 
    static double calcularArea(double raio){ 
      return((raio >= 0) ? Math.PI * Math.pow(raio, 2) : -1);
    }
 
}
 
public static class AreaCasa {
    //preço do metro quadrado
    static double valorM2 = 1500;
 
    //calcula a área da casa
    static double CasaRet(double l_sala, double c_quarto) {
        double area_s; //área da sala
        double area_q; //área do quarto
        double area_t = 0; //área do total
 
        if(l_sala < 0 || c_quarto < 0)
             System.out.println("Erro!");
 
        else{
            area_s = l_sala * l_sala; //calcula area da sala
            area_q = c_quarto * (l_sala/2); //calcula area do quarto            
            area_t = area_s + 2 * area_q; //calcula a area total
        }
        return(area_t);
    }
}
 
 static double Area(double lateral_1, double lateral_2, double pis_raio) {
        return(AreaCasa.CasaRet(lateral_1, lateral_2) + AreaPiscina.calcularArea(pis_raio));
    }
 
	public static void main (String[] args) throws java.lang.Exception
	{
	System.out.println(Area(21.43, 33.4, 2.0));
	}
}

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