The volume of the prism is the product of its length, width, and height:
Volume = length x width x height
Volume = 12m x 14m x 54m = 9072 cubic meters
To show that the product is the same as packing the prism with unit cubes, we can calculate the volume of a single unit cube that has an edge length of 14m:
Volume of unit cube = 14m x 14m x 14m = 2744 cubic meters
Now, we can divide the volume of the prism by the volume of a unit cube to see if the product is the same as packing the prism with unit cubes:
9072 cubic meters / 2744 cubic meters = 10 unit cubes
Therefore, the volume of the prism is 9072 cubic meters.