Please Help! Explanation too?

Answer:
D. 1,164 cubic yards
Step-by-step explanation:
Volume of a rectangular prism is width times length times height.
V = WLH
The volume of the top prism is:
V = (3 yd) (9 yd) (4 yd)
V = 108 yd³
The volume of the bottom prism is:
V = (6 yd) (22 yd) (8 yd)
V = 1056 yd³
The total volume is 108 yd³ + 1056 yd³ = 1164 yd³.