| Edinburgh encyclopaedia - 1830
...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
...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 - 359 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 - 262 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 - 262 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 - 1089 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 - 264 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 - 103 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 - 359 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 - 286 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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