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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, and the square root of the product will be the area required. "
Higher Book - Page 252
by William Seneca Sutton - 1896
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How to Do Business as Business is Done in Great Commercial Centers

Seymour Eaton - Business - 1896 - 330 pages
...7,224 as the product. 72. Here is a very excellent rule for finding the area of a triangle when the three sides are given : From half the sum of the three sides subtract each side separately, multiply the half-sum and the three remainders together; the product will be the area. 73. To find...
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Machinists' and Draftsmen's Handbook: Containing Tables, Rules, and Formulas ...

Peder Lobben - Mechanical engineering - 1899 - 460 pages
...circle of the same area. To Figure the Area of Any Triangle when Only the Length of the Three Sides Is Given. From half the sum of the three sides subtract each side separately; multiply these three remainders with each other and the product by half the sum of the sides, and the...
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Machinists' and Draftsmen's Handbook: Containing Tables, Rules, and Formulas ...

Peder Lobben - Mechanical engineering - 1899 - 460 pages
...same area. To Figure the Area of Any TriangIe when Only the Length of the Three Sides is Given. RULE. From half the sum of the three sides subtract each side separately ; multiply these three remainders with each other and the product by half the sum of the sides, and...
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Elementary Practical Mathematics

Frank Castle - Mathematics - 1899 - 424 pages
...Triangle A base x altitude ; or, half the product of two sides by the sine of included angle ; or, from half the sum of the three sides subtract each side separately. Multiply the half sum and the three remainders together and find the square root of the product. Area...
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Workshop Mathematics, Part 1

Frank Castle - Mathematics - 1900 - 184 pages
...700 links. Find the area of the field in acres. Summary. Area of a Triangle = J base x altitude. Or, from half the sum of the three sides subtract each side separately; multiply the half sum and three remainders together ; the square root of the product gives the area...
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Famous Geometrical Theorems and Problems, with Their History, Part 1

William Whitehead Rupert - Geometry - 1900 - 148 pages
...which reason He always is God." CHAPTER V. THE AREA OF A TRIANGLE IN TERMS OF ITS SIDES. 48. RULE. — 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....
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Graded Work in Arithmetic, Book 9

Samuel Wesley Baird - Arithmetic - 1901 - 390 pages
...What is the altitude ? (96 -*- 16) x 2 = 12 ft., altitude 675. To find the area of a triangle when its three sides are given, from half the sum of the three sides subtract each side separately. Find the product of the half sum and the three remainders. The square root of the product will be the area of...
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A Textbook on Sheet-metal Pattern Drafting, Volume 1

Metal-work - 1901 - 548 pages
...-r; „" it a triangle are given, its area is ' ' found by the following rule: FIG. 8. Rule. — From half the sum of the three sides, subtract each side separately; find the continued product of the half sum of the sides and the three remainders; the square root of this continued...
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New Practical Arithmetic

Eugene L. Dubbs - Arithmetic - 1901 - 462 pages
...Multiply the base by the altitude, and take half the product. 2d. When the three sides are given. RULE. 1. From half the sum of the three sides subtract each side separately. 2. Multiply together the half sum and the three remainders, and extract the square root of the product....
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Graded Work in Arithmetic, Book 8

Samuel Wesley Baird - 1902 - 176 pages
...12 ft. Find the base. OPERATION (96 ^>f)= 16 ft, base. Ans. To find the area of a triangle when its three sides are given, from half the sum of the three sides subtract each fide separately. Find the product of the half sum and the three remainders. The square root of the...
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