A Sphere with a Cylindrical Hole cut so that the centers of the Cylinder and
Sphere coincide, also called a Napkin Ring.
The volume of the entire Cylinder is

(1) |

(2) |

(3) | |||

(4) |

so the Volume removed upon drilling of a Cylindrical hole is

(5) |

so

(6) |

© 1996-9

1999-05-26