Answer:

Explanation:
The formula of a volume of a prism:

B - area of a base
H - height
We have the triangle in the Base. The fomula of an area of a triangle:

b - base
h - height
We have b = 58ft and h = 78ft. Substitute:

The volume:
B = 2,262 ft², H = 100 ft. Substitute:
