To calculate the volume of a triangular prism first you need to find the area of one of the triangular bases by multiplying ½ by the base of the triangle and by the height of the triangle. If you know the height. Calculate the area of the circular base.
Calculate volume of geometric solids.
Whenever we have a solid whose cross-section is the same along its length we can always find its volume by multiplying the area of the end by its length. Visual in the figure below. Divide the bore diameter by 2 to get the bore radius. Calculate the area of the circular base.