6 x 6 x 4 = 144 cubic feet
None
none
None. If it's a hole, then the dirt has been removed.
none, it is a hole
There is no dirt in a hole.
A hole does not have dirt!
There's no dirt in a hole.
There is no dirt in the hole, hence the hole.
It's a hole, the dirt has been taken out of it. So, none.
This is a trick question, a riddle. There is NO dirt in the hole because you made the hole by taking all the dirt out. For the record, the amount of dirt that was taken out of the ground to make the hole is 6 x 6 x 4 = 144 ft3.
If it's a hole, there would be no dirt in it, right?
None. If there was, it would no longer be a hole!