It all depends on the thickness, which you left out of your question.
At 4" thick, it would be about 4 1/2 cubic yards.
At 6" thick, it would be about 6 3/4 cubic yards.
At 8" thick, it would be almost 9 cubic yards.
You will need a minimum of 7.41 cubic yards.
A 40x60x6in slab requires 44.44 cubic yards of cement.
A 40'x40'x6" slab requires 29.63 cubic yards of cement.
5,000,000 barrels of cement were used to make the 4,300,000 cubic yards of concrete required.
Need to know how many bags of cement I will need for a 20x10 space?
1.85 cubic yards of cement.
8.64 cubic yards of cement.
You will need 6.17 cubic yards of cement.
12.96 yards
At 4" deep, a 13' x 19' area needs at least 3.05 cubic yards of cement.
5.93 cubic yards.
Thickness? Do you mean cement or concrete - cement is the binder/adhesive in the concrete.
A 16' x 8' by 4" slab requires 3.56 cubic yards of cement.
13*13*6=1014 yards of cement
You will need a minimum of 7.41 cubic yards.
You will need 27.6 cubic yards of cement.
You will need a minimum of 18.96 cubic yards.