The volume is 126 units.
To find the volume, you have to first find the volume of the figures separately. The short one I’m going to call figure 1 and the taller one is going to be figure 2.
For figure one, you first need to find the base, which will be 7 x 6. Take that number, 42, and multiply it by the height, 1. The volume of figure 1 is 42.
For figure two, you first need to find the base, which will be 7 x 3. Take that number, 21, and multiply it by the height, 4. The volume of figure 2 is 84.
Add the volumes of these two figures. 42 + 84 is 126. The volume of the figure is 126.