What is the volume, in cubic inches, of a sphere with an 18 18-inch diameter? Enter your answer in the space provided.
The formula to calculate the volume of a sphere is V = (4/3) * pi * r^3, where r is the radius of the sphere.
Given that the diameter of the sphere is 18 inches, the radius would be half of that, which is 9 inches.
Plugging in the value of the radius into the formula, we get:
V = (4/3) * pi * 9^3
V = (4/3) * pi * 729
V = 3053.628059 cubic inches
Therefore, the volume of a sphere with an 18-inch diameter is approximately 3053.63 cubic inches.