That equates to 2 yards by 2 yards by 4/36 of a yard = 2 x 2 x 1/9 = 4/12 = 4/9 of a sq yard.
Therefore, by normally accepted trade measurements, you will need just under 1/2 yard of concrete.
A "yard" of concrete refers to a cubic yard which is 3 x 3 x 3 feet = 27 cubic feet.
Your project is 6 x 6 x 1/3 feet = 12 cubic feet or a bit less than 1/2 cubic yard, but more than 1/3.
40.1 cubic yards
If it is 4 inches deep/thick, 2 cubic yards. If it is 6 inches deep/thick, 3 cubic yards.
You'll need 1.23 Cubic Yards.
It is about 166.67 cubic feet and you will need just over 6.17 cubic yards of concrete.
2.2222222201902215 cubic yards
2.2 Yards
1.77 cubic yards
16.05
40.1 cubic yards
If it is 4 inches deep/thick, 2 cubic yards. If it is 6 inches deep/thick, 3 cubic yards.
You'll need 1.23 Cubic Yards.
It is about 166.67 cubic feet and you will need just over 6.17 cubic yards of concrete.
2.2222222201902215 cubic yards
12.30 cubic yards
That depends on how DEEP you want the concrete !
That's just about 3.9 cubic yards for every 6 inches deep.
You will need 0.56 cubic yards of concrete.