| Charles Vyse - Arithmetic - 1785 - 325 pages
...RULE, 3. From Half the Burn of the three Sides fubtnuft each Side feverally ; multiply the Half Sura **and the three Remainders continually together, and the Square Root of the** laft ProducT. will be the Area 6f the Triangle, that is, * • Tc— 2. *=Half the Sum of the Sides.... | |
| Charles Vyse - Arithmetic - 1806 - 320 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...continually together, and the Square Root of the last** Produdl will be the Area of the Triangle, that is, ^++l= j = Half the Sum of the Sides'. 2 Then let... | |
| Robert Gibson - Surveying - 1806 - 452 pages
...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
...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; multiply the half sum and the three remainders** together, and the square root of the product will be the area required. EXAMPLE I. Rcquireth the area... | |
| Robert Gibson, D. P. Adams - Surveying - 1811 - 508 pages
...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 - Plane trigonometry - 1814 - 346 pages
...37° 30' and 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...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 - 320 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... | |
| John Gummere - Plane trigonometry - 1817 - 206 pages
...30' and 48° 15' ? Ans. 6A. 3R. 18P. PROBLEM V. To find the area of a triangle, when the three sides **are given. RULE. From half the sum of the three sides subtract each** sifle severally ; multiply the half sum and the three remainders continually together, and the square... | |
| Robert Gibson - Surveying - 1818 - 478 pages
...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... | |
| Peter Nicholson - Mathematics - 1825 - 372 pages
...52 Ofi2.5 Prob. 3. 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...¡ multiply the half sum and the three remainders** together, and the square root of the product will be the area required. Едг. Requireth the area... | |
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