If it is the same as concrete it will cover 162 square feet. concrete covers 81 square feet by 4" deep
100' x 200' x 1/3' = 6666.66... recurring cubic feet.
25 cubic feet or about 1 cubic yard.
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
2 inches = 1/6 foot Volume = 3,500/6 = 5831/3 cubic feet = 21.605 cubic yards
1 cubic yard equals 27 cubic feet. At a six inch depth 1 cubic foot will cover 2 square feet, so 27 cubic feet will cover 54 square feet.
100 cubic feet for every foot of depth.
240 x 3 /12 Cubic feet = 60 cubic feet
A 1 cubic foot bag will cover 12 square feet at a depth of 1" A 1.5 cubic foot bag will cover 18 square feet at a depth of 1"
Volume = (base area) x (height) = 300 cubic feet = 111/9 cubic yard.
One cubic yard of rock will cover an area of 81 square feet at a depth of 6 inches.
Technically, none. A square foot is a measure of area whereas it is the volume of water that is required. To convert from area to volume it is necessary to know the depth. A twelfth of a cubic foot will cover an area of one square foot to a depth of 1 inch. A cubic foot will cover it to a depth of 1 foot, 100 cubic feet will cover it to a depth of 100 feet.
100 cubic feet is a volume, not an area. Consequently the question is misguided.
Volume = 12 X 20 X 1/3 = 80 cubic feet Cubic yards = 80/27 = 2.96
You will need 1500 cubic feet.
200 cubic feet or 7.4 cubic yards
50 pounds covers 0.5 cubic feet. Since the depth is 3 inches, or 1/4 foot, you can cover 0.5/.25 = 2 square feet of area. That is not very much.