volume=length times width times height
it is possible for us to have a shorter length but have greater volume if the other 2 dimentions (width and height) are sufficiently great to compensate
example
box a is length 2, width 10 and height 20, volume is 400 cubic units
box b is length 3, width 4, and height 5, volume is 60 cubic units
the width and heigth must be greater