 | Charles Haynes Haswell - Engineering - 1844 - 298 pages
...cd, and half the product will be the area. To find the Area of a Triangle by the length of its sides. RULE. — From half the sum of the three sides subtract each side separately ; then multiply the half sum and the \hree remainders continually together, and the square... | |
 | William Templeton (engineer.) - 1845 - 210 pages
...7.7^ / /3 =206-34375 square feet, the area. When only the three sides of a triangle can be given, to find the area. Rule. — From half the sum of the...three remainders together, and the square root of the product is equal the area required. Required the area of a triangle, whose three sides are respectively... | |
 | William Watson (of Beverley.) - 1845 - 188 pages
...chains. Ans. 3a. Or. 18p. PROBLEM 3. — To find the area of a triangle, when three sides are given. RULE. From half the sum of the three sides, subtract each side severally, multiply the lialf sum, and the three • These, and the following, should be laid down with a plotting scale. t... | |
 | Mechanical engineering - 1847 - 190 pages
...su53-25 XT7S I When only the three sides of a triangle can be given, to find the artaRule — Prom half the sum of the three sides subtract each side...three remainders together, and the square root of the product is equal the area requiredRequired the area of a triangle, whose three sides are respectively... | |
 | William Vogdes - Arithmetic - 1847 - 324 pages
...height 12 perches : how many acres does it contain ? PROBLEM XI. Given three sides of a triangle, to find the area. RULE. From half the sum of the three...severally. Multiply the half sum and the three remainders continually together, and the square root of the product will be the area required. EXAMPLES 1. What... | |
 | Anthony Nesbit - Plane trigonometry - 1847 - 492 pages
...foregoing method. 4. When the three sides of a triangle are given, the area may be found as follows. From half the sum of the three sides subtract each...severally ; multiply the half sum and the three remainders continually together, and the square root of the last product will be the area required. This method... | |
 | 458 pages
...that is, equal to 12 sq. in. PROBLEM III. To find the area of a triangle, whose three sides are given. From half the sum of the three sides subtract each side severally, then multiply the half sum and the three remainders continually together, and the square root of the... | |
 | Peter Nicholson, Joseph Gwilt - Architectural drawing Technique - 1848 - 750 pages
...PROBLEM III. PLATE 50. To find the area of a triangle whose three sides only are given. From the half sum of the three sides subtract each side severally;...three remainders together, and the square root of the product will be the area required. EXAMPLE I. Required the area of a triangle ABC, whose three... | |
 | Thomas Tate (mathematical master.) - 1848 - 284 pages
...perpendicular 25-25 ft. ? Ans. 68-736. 3. PROBLEM. To find the area of a triangle, given the three sides. RULE. From half the sum of the three sides subtract...severally ; multiply the half sum and the three remainders continually together, and the square root of the last product will be the area of the triangle. (See... | |
 | P. O'Shaughnessy (Civil engineer) - Civil engineering - 1848 - 110 pages
...feet ? Ans. 2748. 9. Prob. 5. To find the area of a plain triangle when the three sides are given. Rule. — From half the sum of the three sides subtract...severally. Multiply the half sum and the three remainders continually together, the square root of the product will be the area. Demonstration. — Let ABC figure... | |
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From half the sum of the three sides, subtract each side severally; multiply the half sum, and the three remainders together, and the square root of the product will be the area required. Example. — Required the area of a triangle, whose sides are 50,... 
