The volume of the box = 168 cm³
Volume is a derivative quantity derived from the length of the principal
The unit of volume can be expressed in liters or milliliters or cubic meters
The volume of the box can be formulated :
[tex]\tt \boxed{\bold{V=length\times width\times height}}}[/tex]
Dimensions of the box:
Length=12 cm
Width=12 cm
Height=12 cm
so the volume :
[tex]\tt V=12\times 2\times 7\\\\V=\boxed{\bold{168~cm^3}}[/tex]