2
A pyramid has 1 square base.
square base pyramid
Spherical
legnthXwidthXheight Top is close, but only for a rectangular prism :(... It is actually (base area) X height. For pyramids, it is 1/3(base area) X height.
A cone perhaps?
Octagonal prism
Octagonal pyramid
cube square prism
A pyramid has 1 square base.
the cone.
pentagonal pyramid
cone
square base pyramid
Spherical
A hemisphere
A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges.
Sphere