Question

The volume of a triangular prism with base dimensions of 4 cm height and 10 cm base and a prism height of 15 cm is??

Answer 1

I think you can do this way:
Volume = B*h where B is the area of the base.
B= 4 * 10 = 40
V= 40 * 15
V= 600 cm^3

Answer 2

So,

Your question has already provided the necessary information for us to be able to compute the volume.  To find the volume of the triangular prism, you just need to multiply the area of the base (a triangle) by the height (15).

We already know how to find the area of a triangle.

$\frac{1}{2} (10)(4)$

5(4)

20 cm²

Now, multiply that by the height of the prism.

20 * 15 = 300 cm³

The volume of the triangular prism is 300 cm³.