Answer:
144 in^3
Explanation:
You need to separate the figure into the top and bottom rectangles
For the top, the volume = 12 x 4 x 1 = 48
For the bottom, the length is 12, the height is 5 - 1 = 4, the width is 2
so the volume is 12 x 4 x 2 = 96
The volume of the figure is 48 + 96 = 144 in^3