36(3.14) = 4/3 x 3.14 x r^3
113.04 = 4.187(r^3)
113.04/4.187 = r^3
26.997 = r^3
3√26.997 = r
r = ~3
Check: 3^3(

)(4/3) = 27(3.14)(4/3) = 113.04
I think the answer is A. That's a weird version of a growth factor formula.
Volume of a cylinder: Area of the base (circle) time height
V= π.R² x H===> 3.1459 x 3² x 6 = 169.878 cubic ft