Answer: 603 cubic inches
Explanation:
Let's find radius (r):
Diameter is double the radius, so the radius is 4 inches.
Let's find the height (h):
Height is 3 times the radius so the height is 12 inches.
Now let's find the volume:
V = πr^2 × h
V = π × 16 × 12
V = 603 cubic inches