The formula for the volume of a sphere is V = (4/3)πr³, where r is the radius.
Substituting the given radius, we get:
V = (4/3)π(18³) ≈ 24,389 cm³
Rounding to the nearest whole number, we get:
V ≈ 24,389 cm³ ≈ 24,389 cubic centimeters
Therefore, the volume of the sphere is approximately 24,389 cubic centimeters.