You'll need 3.53 cubic yards of cement.
Assuming your pool is round about 800 gallons.
deepest part is 19ft avg is 13ft accroding to some website...
27 cubic feet = 1 cubic yard24 inches = 2 feet4 inches = 1/3 footVolume = (160) x (2) x (1/3) = 1062/3 cubic feet = 3.951cubic yards
You will need 0.56 cubic yards of concrete.
How deep do you want the concrete to be?
It depends on how deep the concrete. 600 sq ft at 6 inch deep is 300 cu ft = 11.1 yards. 12 inch deep is 22,2 yards; 4 inch deep is 5.5 yards
96 cubic feet of concrete
There is no way to answer that without knowing how deep the concrete will be.
Depends how wide the 3 yard length is and how deep the concrete is put over that area.
No, this is not true. The concrete pillars at the base have a foundation which is 7 meters deep.
54sqare feet
Depending on what part of the country you live in. In the south they are to be 2 foot deep, most generally it is 3' deep and extreme north 4' deep.