Hi there!
The formula for the volume of a cylinder is V = pi x r^2 x h. In order to find the volume of the figure above, we'll need to multiply the value of one cylinder by 3, since there are 3 cylinders in the image above. All we need to do is to plug in the values given and solve.
WORK:
V = 3.14 x 3^2 x 8
V = 3.14 x 9 x 8
V = 226.08
V = 678.24in^3
Hope this helps!! :)
If there's anything else that I can help you with, please let me know!