 | Edinburgh encyclopaedia - 1830 - 856 pages
...diameter, by half the arc of the sector, and the product will be the area, as in the whole circle. RULE II. 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. The first of these rules is contained in the last... | |
 | Ireland commissioners of nat. educ - 1834 - 370 pages
...length of the arc by thé radius of the circle, and the product is the area of the sector, f RULE П. As 360 is to the de'grees in the arc of the sector, so is the area of the whole circle to the area of the sector, i 1 . Let A С B О be a sector less than a semi-circle,... | |
 | Adrien Marie Legendre - Geometry - 1836 - 394 pages
...V. Prop. XII. Cer. 1). RULE II. — Compute the area of the whole circle : then say, as 360 degrees is to the degrees in the arc of the sector, so is the area of the whole circle to the area of the sector. 1. To find the area of a circular sector whose... | |
 | Commissioners of National Education in Ireland - Measurement - 1837 - 290 pages
...length of the arc by the radiusof the circle, and the product is the area of the sector, f RULE II. 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 4 1. Let ACBO be a sector less than a semicircle... | |
 | Commissioners of National Education in Ireland - Measurement - 1837 - 284 pages
...length of the arc by the radius of the circle, and the product is the area of the sector, f RULE II. As 360 is to the degrees in the arc of the sector, go is the area of the whole circle to the area of the sector 4 1. Let ACBO be a sector less than a... | |
 | Joseph Gwilt - Architects - 1842 - 1114 pages
...take J of the product. This rule is founded on the same basis as that to Problem IX. Rule 2. As 36O is to the degrees in the arc of the sector, so is the area of the whole circle to the area of the sector. This is manifest, because it is proportional to... | |
 | Charles Haynes Haswell - Engineering - 1844 - 298 pages
...fig. 13. RULE 1. — Multiply the length of the arc adb by half the length of the radius a a. RDLE 2. — As 360 is to the degrees in the arc of the sector, so is the area of the circle to the area of the sector. NOTE. — If the diameter or radius is not given, add... | |
 | Charles William Hackley - Geometry - 1847 - 248 pages
...bears the same proportion to the whole circle that its arc does to the whole circumference. RULE II. 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. This is evident, because the sector is proportional... | |
 | Charles Davies - Trigonometry - 1849 - 372 pages
...(Book V. Prop. XII. Cor. 1). RULE II.—Compute the area of the whole circle: then say, as 360 degrees is to the degrees in the arc of the sector, so is the area of the whole circle to the area of the sector. 1. To find the area of a circular sector whose... | |
 | Charles Haynes Haswell - Engineering - 1851 - 346 pages
...— -fig. 13. RULB 1. — Multiply the length of the arc adb by half the length of the radius a o. RULE 2. — As 360 is to the degrees in the arc of the sector, so is the area of the circle to the area of the sector. NOTE. — If the diameter or radius is not given, add... | |
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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. 
