package sam.male;

public class Box {
	double length;
	double width;
	double height;
	Box(double x,double y,double z){
		length=x;
		width=y;
		height=z;
	}
	Box(Box b){
		length=b.length;
		width=b.width;
		height=b.height;
	}
	Box(double leng){
		length=width=height;
	}
	Box(){
		height=1;
		width=1;
		length=1;

	}
	double vol() {
		return length*width*height;

	}
	double area(){
		return length*width;
	}

}
 class Bweight extends Box{
	double weight;
	Bweight(Bweight b){
		super(b);
		weight=b.weight;
	}
	Bweight(double x, double y,double z,double a){
		super(x,y,z);
	weight=a;}
	Bweight(){
		super();
		weight=1;
	}
	Bweight(double leng, double a){
		super(leng);
		weight=a;
	}


	  static class Demo {
		public static void main (String  args[]){
		Bweight wei = new Bweight(3,4,5,7);
		double vol;
		vol=wei.vol();
		System.out.print(vol);
	}


}}