Answer:
31104
Explanation:
First, we turn all of the units into inches, so we multiply the feet by 12:
3 · 12; 6 · 12; 9 · 12
Calculate: 36; 72; 108
Add each measurement to its respective side:
36 + 12 · 72 · 108
Compute:
48 · 72 · 108 =
373,248
However, this is in inches. Divide by 12 to get feet:
373,248 ÷ 12 =
31104 cubic feet.