Find the volume of the triangular prism.

8.5 meters high 3 meters wide 5 meters high (in the middle of the circle)

To find the volume of a triangular prism, you need to multiply the area of the base by the height of the prism.

The base of the triangular prism is a triangle with a width of 3 meters and a height of 5 meters. The area of the base triangle is 1/2 * base * height, so the area of the base is 1/2 * 3 * 5 = 7.5 square meters.

Now, multiply the area of the base by the height of the prism (8.5 meters):
Volume = base area * height of prism
Volume = 7.5 * 8.5
Volume = 63.75 cubic meters

Therefore, the volume of the triangular prism is 63.75 cubic meters.