 | William Keane (gardener.) - 1861 - 252 pages
...field is by measuring the three sides separately. The rule for finding the content by the pen is : From half the sum of the three sides, subtract each side severally, then multiply the half sum and the three remainders together, and the square root of the last product... | |
 | Janes Boddely Keene - 1861 - 104 pages
...what is its 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... | |
 | Daniel Adams - Arithmetic - 1861 - 452 pages
...the other ? Ans. 131 feet. To find the area of a triangle when the length of each side is given, — From half the sum of the three sides subtract each side severally ; then multiply the half sum and the three remainders continually together, and the square root of... | |
 | Oliver Byrne - Engineering - 1863 - 600 pages
...A " " 7J pa. = area required. To find the area of a triangle whose three sides only are given. — From half the sum of the three sides subtract each side severally. Multiply the half sum and the three remainders continually together, and the square root of the product... | |
 | Stoddard A. Felter - Arithmetic - 1864 - 412 pages
...OPERATION. l.aso. half alt. area. 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... | |
 | Thomas Baker (C.E.) - 1865 - 174 pages
...has been made, and the work must be repeated. TO FIND THE AREA OF A TRIANGLE FROM THE THREE SIDES. RULE. — From half the sum of the three sides subtract each side severally and reserve the three remainders ; multiply the half sum continually by the three remainders, and the... | |
 | Hoy D. Orton - Mathematics - 1866 - 202 pages
...all very brief by canceling. To find Cite area of any triangle when the, three sides only are given. RULE. — From half the sum of the three sides subtract each side severally; multiply these three remainders and the said half sum, continually together • then the square root... | |
 | Stoddard A. Felter - Arithmetic - 1868 - 360 pages
...alt. area. Operation.— 8 ft. X 2 = 16 sq. ft. Fig. 24. Prob. Hi — 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... | |
 | Isaac Todhunter - Measurement - 1869 - 312 pages
...the number expressing the base, the quotient is the height. 152. The three sides of a triangle being given, to find the area. 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... | |
 | Anthony Nesbit - 1870 - 578 pages
...foregoing method. 4. When the three sides of a triangle are given, the area may be found as fol. Iowa : From half the sum of the three sides subtract each side severally ; multiply the half sum and the three remainders continually together, and the square root of the last... | |
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RULE. From half the sum of the three sides subtract each side severally. 
