If the radius of the sphere is called R, the radius of the spherical segment bases r1 and r2, and the height of the segment (the distance from one parallel plane to the other) called h, the volume of the spherical segment is then:
The surface area of the spherical zone—which excludes the top and bottom bases—is given by:
- Kern, William F.; Bland, James R. (1938). Solid Mensuration with Proofs. p. 95–97.
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