A room measures 4 m in the x direction, 5 m in the y direction , and 3 m in the z direction. A lizard crawls along the walls from one corner of the room to the diametrically opposite corner. If the starting point is the origin of coordinates, what is the displacement vector in terms of unit vectors? -if the lizard chooses the shortest path along the walls, floor or ceiling what is the length of its path? I do not know where to start please help.