A fly by chance got trapped inside a box which is cuboid shaped. The fly entered from the bottom corner and saw an opening at the diagonally opposite top corner of the box. The fly which is very smart tried to figure out which could be its possible path to follow so that it reaches the opening, covering the minimum distance. It thought of flying to the other end and also walking to the other end. What will be the difference in distance covered in walking and flying to the other end? The dimensions of the box is [length = 5 metres, breadth = 3 metres, height = 6 metres].