Correct option D) 1,185.6 inches cubed .
<u>Step-by-step explanation:</u>
Here we have , A triangular prism. The triangular base has a base of 12 inches and height of 10.4 inches. The height of the prism is 19 inches. We need to find the volume of the triangular prism .Let's find out:
We have following parameters :

We know that , Volume of triangular prism is :
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Therefore , Correct option D) 1,185.6 inches cubed .