Final answer:
The volume of the attic, shaped like a triangular prism, is 5184 ft³.
Step-by-step explanation:
To calculate the volume of the attic, we multiply the width, length, and height of the triangular prism. The volume formula for a triangular prism is:
V = (1/2) * base area * height
The base area of the triangular prism is (1/2) * 36 ft * 64 ft = 1152 ft². So, the volume of the attic is V = (1/2) * 1152 ft² * 9 ft = 5184 ft³.