 From half the sum of the three 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 required.  Mensuration for pupil teachers - Page 46by James Elliot - 1879 - 106 pagesFull view - About this book
 | Mathematics - 1801 - 658 pages
...area. When tkt three sides only are ghwi ; — add tlic three sides together, and take half the sum } from the half sum subtract each side separately ; multiply the half sum and ths three * A ttiangle is half a parallelogram of the same base and altitude, (Euc. I. 41) and therefore... | |
 | Samuel Webber - Mathematics - 1808 - 466 pages
...three sicks only arc given ; — add the three sides together, and take half the sum ; from the halt. 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. •... | |
 | John Nicholson - Machinery - 1825 - 822 pages
...Rule 2. When the 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.... | |
 | Zadock Thompson - Arithmetic - 1826 - 176 pages
...the area. RULE 2. — If the three sides only are given, add these together, and tuke 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. Examples.... | |
 | John Nicholson (Civil engineer) - Building - 1830 - 240 pages
...Rule 2. When the 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.... | |
 | Zadock Thompson - Arithmetic - 1832 - 182 pages
...the area. RULE 2. — If the three sides only are given, add these 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 he the area of the triangle. 1.... | |
 | John Hind - Algebra - 1837 - 584 pages
...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... | |
 | Zadock Thompson - Arithmetic - 1838 - 174 pages
...the area, RULE 2. — If the three sides only are given, add these togethej and take half the nun ; from the half sum subtract each side separately ; multiply the half sum and the three remainder* continually together, and the square root of the last product will be the area of the triangle.... | |
 | Zadock Thompson - Arithmetic - 1848 - 184 pages
...the area. RULE 2. — 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 ths area of the triangle. li... | |
 | John Ainslie - 1849 - 586 pages
...Add the three sides, and take half the sum. From the half sum subtract each side successively, then multiply the half sum and the three remainders together...; the square root of the product will be the area of the triangle. In using logarithms, add the logarithm of the half sum and those of the three remainders... | |
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