how much larger is the volume of a cube with a side length of 18 feet long than a cube with a side length of 10 feet long

To find the volume of a cube, you simply cube the length of one side.

For the cube with a side length of 18 feet:
Volume = side length^3 = 18^3 = 5832 cubic feet

For the cube with a side length of 10 feet:
Volume = side length^3 = 10^3 = 1000 cubic feet

The difference in volume between the two cubes is:
5832 - 1000 = 4832 cubic feet

Therefore, the volume of the cube with a side length of 18 feet is 4832 cubic feet larger than the volume of the cube with a side length of 10 feet.