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.
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
62/3 cubic yards for every 1-foot deep. 5 cubic yards for every 9-inches deep. 31/3 cubic yards for every 6-inches deep. 5/9 cubic yard for every 1-inch deep.
Three acres three inches deep is 403.33 cubic yards.