| Charles Vyse - Arithmetic - 1806 - 342 pages
...let at per Acre ? Case 2. When the three Sides of a Triangle are given, to find the Area. RULE. 3. 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 Produdl will be the Area of the Triangle, that... | |
| Robert Gibson - Surveying - 1806 - 486 pages
...Hence the following problem will be evident. PROBLEM VIII. Three sides of a plane triangle given t0 find the area. RULE. From half the sum of the three sides subtract each side severally ; take the logarithms of half the sum and three remainders, anil half their total will be the logarithm... | |
| Peter Nicholson - 1809 - 426 pages
...f. i ii PROBLEM III. 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. Rcquireth the area of a triangle ABC, whose three... | |
| Robert Gibson - Surveying - 1811 - 580 pages
...Hence the following problem will be evident. PROB. nil. The three sides of a filane triangle given to find the area. RULE. From half the sum of the three sides subtract each side severally ; take the logarithms of half the sum and three remainders, and half their total will be the logarithm... | |
| John Gummere - Surveying - 1814 - 398 pages
...48° 15'? Ans. 6A. 3R. 18P. PROBLE To find the area of a 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 contiuually together, and the square root of the last product will be the area.* * DEMONSTRATION. Let... | |
| Charles Vyse - Arithmetic - 1815 - 340 pages
...let at per acre ? Case 2. When the three sides of a triangle are given, to find the area. i RULE. 3. From half the sum of the three sides subtract each side severally ; multiply the half cum and the three remainders continually together, and the square root of the Iast product will be... | |
| Thomas Keith - 1817 - 306 pages
...three sides together, and take half that sum ; subtract each side separately from the half sum, then multiply the half sum and the three remainders together, and the square root of the last product will give the area I. Example. * Demonstration. The truth of this rule is obvious,... | |
| Robert Gibson - Surveying - 1818 - 502 pages
...Hence the following problem will be evident. PROB. VIII. Tlie three sides of a plane triangle given, to find the area. RULE. From half the sum of the three sides subtract each side severally ; take the logarithms of the half sum and three remainders, and half their total will be the logarithm... | |
| Robert Gibson - Surveying - 1821 - 594 pages
...problem will be evident. PROB. V11L JTie tffree. sides of a plane triangle given to Jbid the tfrga. RULE* "From half the sum of the three sides subtract each side severally ; take the logarithms of half the sum and three remainders, and half their total will be the logarithm... | |
| Anthony Nesbit - Surveying - 1824 - 476 pages
...£6 4*. 7 \d. , PROBLEM V. To find the area of a triangle, the three sides only of which are given. 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. Jvofe... | |
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