Final answer:
The volume of the spherical fishbowl with a diameter of 18 inches is approximately 3,052.1 cubic inches, calculated using the formula V = (4/3)πr^3.
Step-by-step explanation:
The volume of a spherical fishbowl can be calculated using the formula for the volume of a sphere, which is V = (4/3)πr^3. With the diameter of the fishbowl given as 18 inches, the radius is half of that, which is 9 inches. Substituting the radius into the formula, we get:
V = (4/3)π(9 inches)^3
Now, doing the calculation:
V = (4/3)π(729 cubic inches)
V = 4π(243 cubic inches)
V ≈ 3,052.1 cubic inches
Therefore, the volume of the fishbowl is approximately 3,052.1 cubic inches.