public class Cuboid {
  Rectangle rec;
  int length;
  
  public Cuboid(int l, int w, int h) {
    rec = new Rectangle(w,h);
    length = l;
  }
  
  public int getLength() { return length; }
  public void setLength(int l) { length = l; }
  
  public int volume() { return length * rec.area(); }
}