The height ( h ) is the distance from the base to the apex or top of the pyramid.

The side length ( s ) is the height of the face triangles.

The perimeter ( P ) and the area ( A ) of the base is calculated according to the shape of the base.

**Surface Area = ( ½ x P x s ) + A**

Volume = 1/3 Ah

Volume = 1/3 Ah

The figure shows a pyramid with a square base ( a = b ) with equalateral triangles for faces.

**Surface area = a ^{2} + √3( a^{2} )**

Volume = √5(a^{3}/6)