Given the figure of a triangular prism.
We will find the volume of the prism using the following formula:

Where B is the area of the triangular base and h is the height of the prism.
As shown the triangular base has an area = B = 0.5 * 10 * 6 = 30 in²
And the height of the prism = h = 15 in
So, the volume will be:

So, the answer will be V = 450 in³