If those are the sides of a square, multiply them to get the area (in square feet).
6
32 cubic feet
A lot of it.
6 ft X 6ft pool would be 36 sq ft 6 ft round pool would be 28.26 sq ft
0.5 ft. there are 12 inches in a foot, so 6 inches is half a foot
6 feet = 1.8288 meters
6 miles is 31,680 feet.
18 = 6 x 3
No. There is no dirt in a hole of any dimensions. It's a hole. D'oh....
About 6-8 gallons, depending how you paint and what the surface is.
2 Cups
75in