I can't make out what the radius of the sphere is, but the equation you're looking for is:
[tex]V=\frac{4}{3}\pi r^3[/tex]
For example:
If the radius of a sphere is 5 m, it's volume would be,
[tex]V=\frac{4}{3}\pi (5)^3[/tex]
[tex]V=\frac{4}{3} (3.14)(5)^3[/tex]
[tex]V=\frac{4}{3}(3.14)(125)[/tex]
[tex]V=523.6 m^3[/tex]
