Answer:
D
Step-by-step explanation:
First, we can find the volume of the rectangular prism.
As shown in the image, the dimensions are 4 by 4 by 9.
So,
4 * 4 * 9 = 144.
Now, we find the volume of the triangular prism.
As shown in the image, the dimensions are 3 by 4 by 9.
So,
3 * 4 * 9 = 108.
Now we add the volumes together:
144 + 108 = 252.
So, the answer is option D: 252 cubic meters.
