Apply the formula to find the volume of a wheelchair ramp in the shape of a triangular prism. It has a base area of 20 square feet and a height of 8 feet. What is the volume of the ramp?

1. 80 ft.3
2. 320 ft.3
3. 160 ft.3
4. 640 ft.3

The formula to find the volume of a triangular prism is V = (1/2) * base area * height.

Substitute the given values into the formula:
V = (1/2) * 20 * 8
V = 0.5 * 20 * 8
V = 10 * 8
V = 80 ft^3

Therefore, the volume of the wheelchair ramp is 80 ft^3, so the correct answer is 1. 80 ft^3.