You will need 3.7 cubic yards of cement.
At 4" deep, a 13' x 19' area needs at least 3.05 cubic yards of cement.
You will need 1.36 cubic yards of cement.
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).
1.1852 cubic yards for every inch the pad is deep.
147 cubic feet of cement are required.
58 x 4 =234 sq feet x .33 = 76.56 cubic feet / 27 = 2.835 cubic yards.
You'll need 3.53 cubic yards of cement.
1,000,000 cubic yards.
1.5 cubic yards of cement are needed for an 11' x 11' x 4" slab.
This is a volume requiring 11.1 cubic yards of cement.
Volume = 12 cubic feet = (12 / 27 ) 0.444 cubic yard
Three acres three inches deep is 403.33 cubic yards.