Answer:
128/3 cubic inches
Step-by-step explanation:
The formula for pyramid volume is (1/3)lwh. Using this we can calculate that the volume of each shape is 320/3 cubic inches and 192/3 inches. When these are subtracted, it reads 128/3 cubic inches.
You are changing the sign on one so to keep an equilibrium you change the other sign too
3844 x 10²
all you need to do is think about the 10th power