The volume formula for a sphere is
[tex]V=\frac{4}{3}\pi(r)^3[/tex]
Where r = 9 cm, let's replace this value and solve
[tex]\begin{gathered} V=\frac{4}{3}\pi(9cm)^3 \\ V=\frac{4}{3}\pi729(cm)^3 \\ V=972\pi(cm)^3 \end{gathered}[/tex]Hence, the third option is correct.
