So,
The formula for the volume of a sphere is:
[tex]V= \frac{4}{3}\pi r^3 [/tex]
Approximating 3.14 for pi and substituting the given values we get:
[tex]V= \frac{4}{3}(3.14) (2.125)^3[/tex]
[tex]V= \frac{4}{3}(3.14) (9.6)[/tex]
[tex]V= \frac{4}{3}(30.14)[/tex]
[tex]V = 40.19\ in.^3[/tex]
