Formula for the volume of a cylinder = pi x r^2 x h
---r = radius
---h = height
This problem gives us the diameter. To find the radius from a given diameter, all we need to do is divide the diameter by 2.
radius = 3
height = 22
volume = 3.14 x 3^2 x 22
volume = 3.14 x 9 x 22
volume = 621.72
volume (rounded) = 622
Answer: 622 m^3
Hope this helps!