Answer:
V=2000cm^3
Explanation:
How I would do this is finding the volume of the 3d rectangle first. the measurements for that rectangle are 10x10x16 which is 1600. Now you add on the volume of the triangle. The measurements for the triangle are 5x10x16 which is 800. Because it's a triangle and how I did it, you have to divide that by 2, so you get 400. Now just add 1600 and 400 to get 2000
I'm sorry if I didn't explain it very well TwT