I can solve for the cubic inches of a pyramid or a triangle, but this shape is a bit different as all sides do not come to one point. It is a triangular bag that i need to find the cubic inch size for.
How do i find the volume of this shape? Is it similar to solving for a pyramid?

This is a prism.
The cross section is a triangle, find the area of the triangle and multiply by the depth and you get the volume.