80
1 cubic yard covers 324 square feet per inch of thickness, divide 324 by thickness in inches to get coverage, i.e. 4 inches thick would cover 324/4=81 square feet, 36 inches thick would cover (you guessed it) 9 square feet.
For a 4-inch depth you will need 7.41 cubic yards.
2.25 square feet.
1704 8 in X 16 in face is .88 sq ft
If you use a standard 4-inch depth, you will need at least 8.9 cubic yards.
1000 square feet/9 = 111.1 square yards of concrete 6 inches thick. This is the same as 111.1/4.5 = 24.7 cubic yards of concrete.
A yard of concrete is a cubic yard and cannot be converted directly to square feet of coverage. You must first determine the depth or thickness that the concrete will be. For instance, since 1 cubic yard equals 27 cubic feet, a 1 foot thick layer of concrete will cover 9 square yards of area. A 4 inch (1/3 foot) thick layer would cover 27 square feet of area.
For a 4-inch thick slab, you will need at least 9.48 Cubic Yards.
90 square feet
1 cubic yard covers 324 square feet per inch of thickness, divide 324 by thickness in inches to get coverage, i.e. 4 inches thick would cover 324/4=81 square feet, 36 inches thick would cover (you guessed it) 9 square feet.
81 Square feet.
roughly 240 square feet. Formula for figuring yardage is: (Width X Length X thickness)/27= cubic yardage of concrete. Just reverse the formula to solve for Width X Length or Square Feet. CY X 27 divided by thickness = square footage
explode
1 acre = 4,840 square yards = 4,840 x 9 square feet = 43,560 square feet. 1 square foot 1 inch thick equals 1/12 of a cubic foot, so 43,560 square feet 1 inch thick equal 1/12 x 43,560= 3,630 cubic feet.
144
720 square feet at the standard 4-inch depth requires 8.9 cubic yards.
16.667 yards of concrete in a 30 ft x 30 ft x 6 in there are 27 cubic feet of concrete in one yard IE: 27 square ft, 12 inches thick or 54 square ft, 6 inches thick