Hence, the number 628317696 is a true expression, as far as the decimals extend, for the circumference of a circle, of which ... 1r, then, is understood, W, which always equals 3-14159, or, if four places _ be considered sufflcient, 31416. We have now traced the origin of the following useful rules :a The diameter of a circle being given, to find the circumference. ... 516-39 8-08 X by 31416 50)1590- 4=812 Product 1622-290824 81-809624 1622-290824For a rough approximation to theanbsp;...

Title | : | Loftus's Inland Revenue Officers' Manual: a guide to the duties and qualifications of persons employed in the Excise Surveying Department. Written and edited by W. H. J. ... [With] wood engravings, etc |

Author | : | William Harris JOHNSTON, William Robert LOFTUS |

Publisher | : | - 1865 |

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