50/3 cubic yds of concrete
39.1116 cubic yards
About 24 cubic yards of cement is required for a slab that size.
One square yard is nine square feet, so 27 square feet is equivalent to 3 square yards. So 3 yards of concrete will cover 27 square feet.
90
9.3 cubic yards of cement is required for this slab.
30' x 20' (600 square feet) = 66.6 square yards.
8.25 cubic yards of concrete
39.1116 cubic yards
how may yards of concrete are needed for a floor 24 x 25 feet?
About 24 cubic yards of cement is required for a slab that size.
One square yard is nine square feet, so 27 square feet is equivalent to 3 square yards. So 3 yards of concrete will cover 27 square feet.
90
55.56 cubic yards.
For a 4-inch thick slab, you will need at least 9.48 Cubic Yards.
9.3 cubic yards of cement is required for this slab.
To calculate how many square yards (SY) of concrete one cubic yard (CY) will cover, first determine the volume of the sidewalk. The sidewalk dimensions are 40 feet wide and 4 inches deep. Converting these measurements, we find that 40 feet equals 13.33 yards, and 4 inches equals approximately 0.11 yards. The volume of the sidewalk is 13.33 yards * 0.11 yards = 1.47 cubic yards. Therefore, 1 cubic yard of concrete will cover approximately 0.68 square yards (1 CY / 1.47 CY).
20 feet x 20 ft x .3333 ft = 133.33 cubic feet / 27 cubic feet per yard = 4.94 cubic yards