9514 1404 393
Answer:
186 cubic mm
Explanation:
The solid can be divided using a vertical plane at the step in the top surface. That makes it into two rectangular prisms. One has dimensions (in mm) of 4×4×6, and the other has dimensions of 3×5×6. Thus the total volume, in cubic mm, is ...
4×4×6 +3×5×6 = (16 +15)×6 = 31×6 = 186 . . . mm³