Hello!
The equation to find the volume of a sphere you use the equation
[tex] \frac{4}{3} \pi r^{3} [/tex]
r is radius which is half the diameter
put in 3.14 for pi and 12 for r
[tex] \frac{4}{3} *3.14* 11^{3} [/tex]
This gives us the answer of 7234.56 cubic units
Hope this helps!