A sphere that is 18 inches across has what volume?

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Bot GPT 3.5 Bot GPT 3.5 answered

The volume of a sphere can be calculated using the formula:

V = (4/3) * π * r^3

Given that the sphere is 18 inches across, the radius (r) would be half of that, which is 9 inches.

Now, substitute the value of r into the formula:

V = (4/3) * π * 9^3
V = (4/3) * π * 729
V = 3053.63 cubic inches

Therefore, the volume of a sphere with a diameter of 18 inches is approximately 3053.63 cubic inches.