Describe how the formulas for a cone, cylinder and pyramid are derived. What are the similarities between the volume of a cone and pyramid?

The similarities

Vcylinder=hpir^2

Vcone = (1/3) hpir^2

Vpyramid = (1/3) hlw

notice that the cylinder has a circle base and circle top

cone tapers

when that happens, the cone is 1/3 of the whole

so the pyrmid is 1/3 the volume of a shape with same base area and same height