 | William Easton (of Hereford.) - 1859 - 110 pages
...divide by 2. When the three sides are given. Rule 2. Find half the sum of the sides. From this half sum, subtract each side separately. Multiply the half sum...three remainders together, and extract the square rout. The result is the area. Find the area of the following triangles : — 15. Base, Г-5 ft. ; perpendicular,... | |
 | Alfred Newsom Niblett - 1861 - 204 pages
...by the perpendicular, and half the product will be the area. CASE 2.—The three sides being given. From half the sum of the three sides subtract each...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. NOTE... | |
 | Janes Boddely Keene - 1861 - 104 pages
...area in square yards ? Ans. 875 one-9th yds. When the Three Sides of a Triangle are given. RULE. — 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... | |
 | Stoddard A. Felter - Arithmetic - 1864 - 412 pages
...8ft. X 2 = 16 sq.ft. PROB. II. — The sides of a triangle being given to find the area. RULE. — From half the sum of the three sides subtract each side separately, then multiply the continued product of these remainders by half the sum of the sides, and extract the... | |
 | Thomas Baker (C.E.) - 1865 - 174 pages
...three sides only are given : add the three sides altogether, and take half the sum ; from the half sum subtract each side separately ; multiply the half sum and the three remainders continually together ; and take the square root of the last product for the area of the triangle. FORMULA.... | |
 | Harris & Brother (Philadelphia) - 1866 - 110 pages
...X by one-half the perpendicular height. 3. TRIANGLE — Area from three sides given. From the half sum of the three sides subtract each side separately...the half sum and the three remainders together, and the square root of the product will be the area. 4. TRAPEZOID — the sum of the two parallel sides... | |
 | Edward Thomas Stevens - 1866 - 434 pages
...hypoteneuse required. To Jind the area of any triaiu]k when the three sides only are gicen. KULE : — From half the sum of the three sides subtract each side separately, then multiply the half sum and the three remainders together. The square root of the product is the... | |
 | Whiting Griswold - Railroad engineering - 1866 - 144 pages
...angle, and one-half the product equals the area. To find the area of a triangle by its sides. RULE 8. From half the sum of the three sides subtract each side separately ; then multiply the half sum and the three remainders continually together, and the square root of... | |
 | John Groesbeck - Arithmetic - 1867 - 226 pages
...length by the breadth. To find the area of a triangle. Multiply the base by one-half the altitude. Or, From half the sum of the three sides subtract each side separately ; multiply together the half sum and the three remainders, and extract the square root of the product. To find... | |
 | Septimus Tebay - Measurement - 1868 - 168 pages
...CONTINUED. IX. TO find the area of a triangle when the three sides are given. From half the sum of the sides subtract each side separately; multiply the...remainders together, and extract the square root. Ex. 1. Find the area of a triangle whose sides are 19, 24, 34. 7So7S 375375 300300 75o75 10885875 45... | |
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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. 
