V o l u m e = 1 3 h ( B 1 + B 2 + B 1 ⋅ B 2 )
h: Height B1: Larger base B2: Smaller base
s i d e l e n g t h = h 2 + ( m 1 − m 2 )
m1 and m2: Distance from the center of the base to the side
A frustum can have different types of bases, not only square ones.