Answer:
80
Explanation:
the formula to find the volume in a triangular prism that only gives you the base area and the height is:
V = Base area * height
So the question said that the base area is 20 and the height is 4. SO lets put it into the formula:
V = 20 * 4
Now we solve it :
V = 20 * 4
V = 80
So the volume of the prism is 80 square feet.
Hope this helps you!