A spherical segment is a three-dimensional shape formed by cutting a sphere with two parallel planes. It consists of the part of a sphere between these two planes and has two circular faces—one on the top and one on the bottom.
\[ V = \frac{1}{6} \pi h \left( 3r_1^2 + 3r_2^2 + h^2 \right) \]
Alternate form (simplified version):
\[ V = \frac{1}{6} \pi h^3 + \frac{1}{2} \pi (r_1^2 + r_2^2) h \]
\[ A = 2 \pi R h \]
Note: This includes only the curved surface area, not the areas of the two circular faces.