What is the volume of a sphere with a diameter of 28 cm?

If the diameter is 28 cm then the radius is half that so radius is 14 cm.
From there we can just use the volume of a sphere formula which is
##4/(3) pi r^3##
We can just plug in for r and get
##4/3 pi (14)^3##
Plug in and the answer is
11494.04 cm cubed