Answer:
165 inch
Explanation:
1) Consider the figure as a whole cuboid
2) Calculate its volume: 10×9×3=270 inch^3
3) Find the height of the upper part of the cuboid on the right side: 9-4=5 inch
4) Find the volume of the missing cuboid (the top left part): 7×3×5=105
5) Subtract the volume of the whole cuboid with the one of the missing part: 270-105=165 inch^3
This is a longer method than the one shown above. However this would be good if the two cuboids intersect each other.