Answer:
512 cubic inches
Step-by-step explanation:
Volume of a Cube is: [tex]V=s^3[/tex]
s - side length.
The side length in the cube given is 8 inches.
[tex]V=8^3\\\rightarrow 8*8*8=512\\\boxed {V=512}[/tex]
The cube should contain 512 cubic inches of water.