 | Charles Davies - Surveying - 1883 - 614 pages
...R. 38 P. BECOND METHOD. RULE. — Measure the three sides of the triangle. Then, add them together and take half their sum. From this half sum subtract...multiply the half sum and the three remainders together, und extract the square root of the product ; the result u-iU be tlie area (Geom. Mens., Art. 97). Or,... | |
 | Frederick Thomas Hodgson - Carpentry - 1883 - 168 pages
...=63 feet the area of the triangle. Another Rule. — Add the three sides together, and from half the sum subtract each side separately; then multiply the half sum and the three sides together, and the square root of the product will be the area required. Let the sides of a triangle... | |
 | James Bates Thomson - Business mathematics - 1884 - 344 pages
...given. From half the sum of the three sides subtract each side respectively ; then multiply half the sum and the three remainders together, and extract the square root of the product. 4. What is the area of a triangle whose sides are respectively 12 feet, 16 feet, and 18 feet ? SOUJTIOTT.—(12... | |
 | Andrew Jackson Rickoff - Arithmetic - 1886 - 688 pages
...triangle are given, to find the area : From half the sum of the three sides subtract each side separately. Multiply the half sum and the three remainders together, and extract the square root of the product. The Trapezoid. —Example. — Given the length of each of the two parallel sides of a / jv' trapezoid,... | |
 | Edward Richard Shaw - 1887 - 488 pages
...base by half the altitude. 246. From half the sum of the three sides subtract each side separately, multiply the half sum and the three remainders together, and extract the square root of the product. 247. Multiply the base by the altitude. 248. Multiply the length between the parallel sides by one... | |
 | Edward Richard Shaw - Examinations - 1887 - 360 pages
...base by half the altitude. 246. From half the sum of the three sides subtract each side separately, multiply the half sum and the three remainders together, and extract the square root of the product. 247. Multiply the base by the altitude. 248. Multiply the length between the parallel sides by one... | |
 | Christian Brothers - Arithmetic - 1888 - 484 pages
...27 x 13 x 12 = 219024 Area = -v/219024 = 468 sq. yd. RULE. — From half the sum of the three sides, subtract each side separately ; then multiply the half sum and the three remainders together; and the square root of the continued product will be the area. ê. Find the area of a triangle whose sides... | |
 | W. V. Wright - Measurement - 1887 - 76 pages
...area : From• half the sum of the three sides subtract each side separately. Multiply the half-sum and the three remainders together, and extract the square root of the product. To find the area of a circle : Multiply the circumference by one-half of the radius. To find the surface... | |
 | Andrew Jackson Rickoff - 1888 - 464 pages
...triangle are given, to find the area: From half the sum of the three sides subtract each side separately. Multiply the half sum and the three remainders together, and extract the square root of the product. length of each of the two parallel sides of a / A/ The Trapezoid.—Example. —Given the trapezoid,... | |
 | James William Nicholson - Arithmetic - 1889 - 408 pages
...900; v'itOO = 30, Ans. in sq. in. RULE. — From half the sum of the three sides subtract each side; then multiply the half sum and the three remainders...together , and extract the square root of the product. 20. Find the area of a triangle whose sides are 12, 16, and 20 feet. 21. Find the area of an equilateral... | |
| |
Multiply the half sum and the three remainders together, and extract the square root of the product. EXAMPLES. 1. What is the area of a triangle whose sides are respectively 30, 40, and 50 feet ? 30 + 40 + 50 = 120. 
