Let us solve for the volume by multiplying all the given dimensions:
V = 450 cubits * 50 cubits * 20 cubits
V = 450,000 cubic cubits = 450,000 cubits^3
We know that: 1 cubit = 6 palms and 1 palm = 0.1 m, therefore:
V = (450,000 cubits^3) * (6 palms / cubits)^3 * (0.1 m / palm)^3
V = 97,200 m^3