You will need a minimum of 7.41 cubic yards.
Need to know how many bags of cement I will need for a 20x10 space?
2.2 Yards
100
There are not enough measurements to calculate square yards. It would need to be 7500 by (another measurement) to calculate.
There is no regular size of 'sack' and too many sizes of 'barrel'. -You need to be much more specific.
You will need 6.17 cubic yards of cement.
8.64 cubic yards of cement.
12.96 yards
At 8" thick, you will need at least 4.67 cubic yards.
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.
13*13*6=1014 yards of cement
For this area you will need 2.4 cubic yards.
56'x46'x4" requires 31.8 cubic yards.
You will need a minimum of 3.56 cubic yards.
0.86 cubic yards is needed.