 | Dudley Leavitt - Mathematics - 1830 - 154 pages
...the three sides of a triangle are given, the area may be found thus, without a perpendicular. Erom half the sum of the three sides, subtract each side separately ; multiply the half sum and 3 remainders continually together, and the square root of the last product will be the area. Therefore,... | |
 | John Nicholson (Civil engineer) - Building - 1830 - 240 pages
...three sides only are given : Add the three sides together, and take half the sum ; from the half sum subtract each side separately ; 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. Ex.... | |
 | 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... | |
 | Ira Wanzer - Arithmetic - 1831 - 408 pages
...in Problem III. 2. When the three sides of the triangle are given, the area may be found as follows: From half the sum of the three sides subtract each side separately ; then multiply the said half sum and the three remainders continually together, and the square root... | |
 | Zadock Thompson - Arithmetic - 1832 - 186 pages
...— If the three sides only are given, add these togethe? and take half the sum ; from the half sum subtract each side separately ; 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. 1.... | |
 | Ireland commissioners of nat. educ - 1834 - 370 pages
...feet Gi inches. PROBLEM V. Having the three sides of any Triangle given, to find its orea. RULE I. 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 last product... | |
 | 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... | |
 | John Hind - Algebra - 1837 - 584 pages
...have the area - £ AB x CD C 2 = - x - \/s (s — «)(« — b) (s — c) From half the sum of the sides, subtract each side separately: multiply the half sum and the three remainders together, and the square root of the product will be the area. Ex. 4. Required the area of a triangle whose sides... | |
 | Commissioners of National Education in Ireland - Measurement - 1837 - 284 pages
...feet 6^ inches. PROBLEM V. Having the three sides of any Triangle given, to find its area. RULE I. 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 last product... | |
 | Thomas Keith - 1839 - 498 pages
...the sum of these four logarithms is the logarithmic sine of half the angle sought (422). RULE III. From half the sum of the three sides subtract each side separately. Then add together, mic sines of the difference between the half sum and each side containing the required... | |
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RULE. — From half the sum of the three sides, subtract each side separately; multiply the half -sum and the three remainders together; the square root of the product is the area. 
