A cubic foot is a unit of volume. A square foot is a unit of area. The two units are therefore incompatible.
Chat with our AI personalities
I assume 5.68 is in ft already. If so, 1562 cubic feet.
Volume = (84) x (1/6) = 14 cubic feet = 0.52 cubic yard
28,000 square feet x (8.5 inch / 12 inch per foot) = 19,833.3 cubic ft19,833.3 cubic ft x 62.38 pounds per cubic foot = 1,237,203 pounds1,237,203 pounds / 2,000 pounds per ton = 618.6 tons
A "yard" of gravel is a short way of saying a "cubic yard". A cubic yard is 3 feet wide, 3 feet tall, and 3 feet deep, or any other 3 numbers of feet that, multiplied together equals 27 cubic yards.
1 acre = 43,560 square feet At 1/2-ft deep, that's (43,560 x 1/2) = 21,780 cubic feet 27 cubic feet = 1 cubic yard 21,780 cubic feet = 806 2/3 cubic yards