Answer:
972π cubic inches
Step-by-step explanation:
The volume (V) of a sphere can be computed in terms of its diameter (d) as ...
V = (π/6)d³
For the given dimension, the volume is ...
V = (π/6)(18 in)³ = 972π in³
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That's about 13.2 gallons, or 50.04 liters.
