864 = 6 x 8 x 18
72 cubic feet
31,104 cubic inches = 18 cubic feet.
That is 18 cubic ft.
18 US gallons equates to 2.4 (2.40625) cubic feet.
One cubic yard is 27 (33) cubic feet, so 18 cubic yards is 18 x 27 cubic feet.
18 feet
If the given dimensions are in feet then 18*8.7*9 = 1409.4 cubic feet
0.635664
540 feet2
48 inches by 16 inches by 18 inches = 8 cubic feet.
One yard is 3 feet. Therefore a cubic yard is 9 cubic feet. 2 cubic yards will cover 18 cubic feet of stone.
This is not a correct conversion. Cubic feet is a measure of volume while square feet is a measure of area.