the volume of a cylinder is the area of the circular face times the length of the cylinder.
the area of a circular face is
\(A=\pi r^2 = \pi\frac{d^2}{4}\)
hence the volume is
\(V= \pi r^2 L = \pi \frac{d^2}{4} L\)
the Length "L" is 36 in
the diameter "d" is 3 in
