Final answer:
To convert the volume of a prism from cubic yards to cubic feet, multiply the volume in cubic yards by 27. The volume of a prism that is 9 cubic yards is 243 cubic feet.
Step-by-step explanation:
To convert the volume of a prism from cubic yards to cubic feet, you need to know that 1 cubic yard is equal to 27 cubic feet.
So, to find the volume in cubic feet, you need to multiply the given volume in cubic yards by 27.
In this case, the volume of the prism is 9 cubic yards. Multiplying 9 by 27 gives you a volume of 243 cubic feet.