I'm thinking yard by yard by yard - 10 in each direction
Yes, it would be cubic yards. From that it is easy to calculate how far it would spread to any particular thickness.
That would be 1,000 cubic yards.
Thanks, that's what I would think, if it were cubic yards, but there is no way this guy delivered, in my driveway, a pile of dirt that was 30 feet by 30 feet by 30 feet. Also, there is no way he delivered a pile that was 1 yard by 1 yard by 10 yards, ie., 3 feet by 3 feet by 30 feet high. The guy delivered a pile that was about 3 feet by 3 feet by 3 to at most 4 feet high. I can't see how that is 10 yards, but he charged my 30 dollars per yard, i.e. $300.00. I think he ripped me off.