In the correct pyramid there is a square with sides 4cm, height 9cm, which is equal to the volume.

The volume of the pyramid is determined by the formula: V = 1/3 * S main. * h.

where: S main. – the area of the base of the pyramid;

h is the height of the pyramid.

Let us define the area of operation.

S main. = 4 * 4 = 16 cm2.

Let’s define the volume of the pyramid.

V = 1/3 * 16 * 9;

V = 48 cm3.

Answer: the volume of the pyramid is 48 cm3.