| A. M. LEGENDRE - 1852
...the radius (B. v., P. 15, c). Or, 2. 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. Ex. 1. To find the area of a circular sector whose... | |
| CHAS. H. HASWELL - 1853
...Circle — -Jig. 13. RULE 1. — Multiply the length of the arc adb by half the length of the radius ao. **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... | |
| Ezra S. Winslow - Business mathematics - 1853 - 252 pages
...the length of one of the sides of the sector, -—and the product- is the area of the sector. Or, — **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. EXAMPLE. — The length of the arc, CE, of the sector... | |
| Charles Davies - Geometry - 1854 - 432 pages
...half the radius (BV, P. 15, c). Or, 2. 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 tl1e whole circle to the area of tl1e sector. Ex. 1. To find the area of a circular sector... | |
| Benjamin Greenleaf - Arithmetic - 1858 - 444 pages
...sector of a circle. Multiply the length of the arc by half the radius of the circle. Or, As 360° are **to the degrees in the arc of the sector, so is the** area of the circle to the area of the sector. Ex. 1 . Required the area of a sector, of which the arc... | |
| Benjamin Greenleaf - Arithmetic - 1858 - 444 pages
...sector of a circle. Multiply the length of the arc by half the radius ofihe circle. Or, As 360° are **to the degrees in the arc of the sector, so is the** area of the circle to the area of the sector. Ex. 1. Required the area of a sector, of which the arc... | |
| Alfred Newsom Niblett - 1861
...circumference of the whole circle, and the remainder will be the length of the arc required. 2. As 300 **is to the degrees in the arc of the sector, so is the** area of the whole circle to the area of the sector. NOTE.—The area of a semicircle, a quadrant, &c.,... | |
| Benjamin Greenleaf - Geometry - 1862 - 490 pages
...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 of the circle to the area of the sector. EXAMPLES. 1. Required the area of a sector, DE, whose... | |
| Benjamin Greenleaf - Geometry - 1862 - 490 pages
...Multiply the arc of the sector by half of its radius (Prop. XV. Cor. 1, I3k. VI.) ; or, As 360° are **to the degrees in the arc of the sector, so is the** area of the circle to the area of the sector. EXAMPLES. 1. Required the area of a sector, DE, whose... | |
| Benjamin Greenleaf - Geometry - 1863 - 320 pages
...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 of the circle to the area of the sector. EXAMPLES. 1. Required the area of a sector, DE, whose... | |
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