Scanner in = new Scanner(System.in);

	System.out.println("Introduzir Comprimento");
	double c = in.nextDouble();

	System.out.println("Introduzir Largura");
	double l = in.nextDouble();

	double area = c*l;
	System.out.println("Area do retângulo" +area);

	double perimetro = (2*c)+(2*l);
	System.out.println("Perimetro do retângulo" +perimetro);