Answer:
The volume of a pyramid is 1/3 Sh, where S is the area of the base and h is the height. Since the area of base (Square) is , S = [tex]s^{2}[/tex], where s is the side of the base. So the volume is
V = 1/3 [tex]s^{2}[/tex]h.
Further solution is on paper (Pictures attached)