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" As 360 is to the degrees in the arc of the sector, so is the area of the whole circle to the area of the sector. "
An Encyclopædia of Architecture: Historical, Theoretical, and Practical - Seite 375
von Joseph Gwilt - 1842 - 1089 Seiten
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Elements of Geometry and Trigonometry: With Practical Applications

Benjamin Greenleaf - 1869 - 516 Seiten
...Multiply the arc of the sector by half of its radius (Prop. XV. Cor. 1, Bk. VI.) ; or, As 360° are to the degrees in the arc of the sector, so is the area%f the circle to the area of the sector. EXAMPLES. 1. Required the area of a sector, DE, whose...
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Appleton's Dictionary of Machines, Mechanics, Engine-work, and ..., Band 2

1874 - 1186 Seiten
...length of the radius ; the product will be the area. RULE 2. — As 360 degrees is to the number of degrees in the arc of the sector ; so is the area of the circle to the area of the sector. To find the area of a segment of a circle. — RULE 1. — To the...
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Hodgson's Estimator and Contractor's Guide for Pricing Builder's Work ...

Frederick Thomas Hodgson - 1904 - 370 Seiten
...the length of the radius, and the product will be the area. Or, as 360 degrees is to the number of degrees in the arc of the sector, so is the area of the circle to the area of the sector. NOTE. — If the diameter of radius is not given, add the square...
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Builders' Reliable Estimator and Contractors' Guide: A Complete Guide for ...

Frederick Thomas Hodgson - 1917 - 696 Seiten
...the length of the radius, and the product will be the area. Or, as 360 degrees is to the number of degrees in the arc of the sector, so is the area of the circle to the area of the sector. NOTE. — If the diameter of radius is not given, add the square...
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A Treatise on Practical Mensuration

Anthony Nesbit - 1859 - 482 Seiten
...of half the arc 45 feet, and the radius 37 feet 6 inches? Ans. 2617ft. 10 in. 6 pa. EULE n. As 360 is to the degrees in the arc of the sector, so is...area of the whole circle to the area of the sector. Note 1. — The area of a semicircle, a quadrant, &c. may be most easily found by taking one-half,...
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