 | James Hale - Surveying - 1829 - 124 pages
...Perpendicular. RULE 2. If the three Sides of a Triangle be given, its Area may be thus obtained: — From half the sum of the three Sides, subtract each Side severally, then extract the Square Root of the continued Product of the half sum and three remainder for the Area.... | |
 | Thomas Conkling (W.) - Arithmetic - 1831 - 302 pages
...three lines or sides. PROBLEM3. When the sides of a triangle are given, to find the content. . ' ' . RULE. From half the sum of the three sides, subtract each side severally; then, multiply that half sum and the three remainders together; and the sqipre root of the last product... | |
 | Robert Gibson - Surveying - 1832 - 290 pages
...whose side is a. Hence the following problem will be evident. PROBLEM VIII. The three' tidet of a plane triangle given, to find the area. RULE.* From half...be the logarithm of the area : or, take the square root of the continued product of the half-sum and three remainders for the area. EXAMPLES. PL. 8. fig.... | |
 | George Alfred - Arithmetic - 1834 - 336 pages
...14 acres 2 roods 32 poks PROBLEM 7. To find the area of a triangle when the three sides are given. RULE. From half the sum of the three sides subtract each side several! y, then multiply the half sum and the three remainders continually together, and the square... | |
 | Robert Gibson, James Ryan - Surveying - 1839 - 452 pages
...following problem will be evident. PROBLEM VIII. T/u litrce sides of a plane triangle given, to fold the area. RULE.* From half the sum of the three sides...half the sum and three remainders, and half their toTy' will be the logarithm of the area i or, take the square root of the continued product of the... | |
 | Frederick Augustus Griffiths - 1840 - 436 pages
....?i__ =140 Square yards. Area required. To find the Area of a Triangle, whose three Sides are given. 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... | |
 | Charles Waterhouse - Arithmetic - 1842 - 180 pages
...by means of the given proportion, the other sides may be found. PROB. IV. — To Measure a Triangle. RULE. — From half the sum of the three sides, subtract each side severally ; multiply these three remainders and the said half sum continually together ; the square root of the... | |
 | Charles WATERHOUSE - Arithmetic - 1844 - 228 pages
...ft.=192 ft., Ans. „ 3. To find the area of a triangle. RULE. — If the three sides only are given. — From half the sum of the three sides, subtract each side severally ; multiply these three remainders and the said half sum continually together ; and the square root... | |
 | 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
...superficies. 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 sides, subtract each side severally ; multiply the half sum and the three remainders together, and the square root of the product is equal... | |
| |
RULE. From half the sum of the three sides subtract each side severally. 
