It is given that the wooden box has 20cm on each edge. It is required to find its volume.
Since the edges have equal lengths of 20cm, it follows that the box is a cube with a side length of 20cm.
Recall that the Volume of a Cube with side length s is given as:
[tex]V=s^3[/tex]Substitute s=20 into the formula:
[tex]V=20^3=8000\text{ cu. cm}[/tex]The answer is B.
