The volume of Cone is given by
[tex]V=\frac{1}{3}\pi r^2h[/tex]where the constant Pi is
[tex]\pi=3.14[/tex]and, in our case, the radius r=2 and the height h=9.
By substituting these values into the volume formula, we have
[tex]V=\frac{1}{3}\pi(2^2)(9)[/tex]which gives
[tex]\begin{gathered} V=\frac{1}{3}\pi\cdot4\cdot9 \\ V=\pi\cdot4\cdot3 \end{gathered}[/tex]Therefore, the answer is
[tex]V=12\pi[/tex]