Answer: 15.625 cubic cm.
Step-by-step explanation:
The volume of a cube is given by:_
[tex]V=a^3[/tex], where a is the side-length of cube.
Given :Each side of a cube is 2.5 cm long.
Then, the volume of the cube will be :-
[tex]V=2.5^3=15.625\ cm^3[/tex]
Hence, the volume of cube is 15.625 cubic cm.