Example. a To find the concave surface of a circular ceiling 26 feet long, and whose arch is represented by figure 16. * Here the chord of the whole arc is 13 feet, and the ... LESSON THE FIRST. 1. Conic Sections are such MENSURATION . 189.

Title | : | A Familiar Introduction to the Arts Sciences |

Author | : | Jeremiah Joyce |

Publisher | : | - 1852 |

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