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From half the sum of the three sides, subtract each side severally; multiply the half sum, and the three remainders together, and the square root of the product will be the area required.
Principles of Architecture: Comprising Fundamental Rules of the Art, with ... - Side 92
av Peter Nicholson, Joseph Gwilt - 1848 - 280 sider
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## Elements of Geometry and Trigonometry: With Practical Applications

Benjamin Greenleaf - 1862 - 490 sider
...Ans. 12 A. 20 P. PROBLEM IX. 622. To find the area of a TRIANGLE, the three sides being given. side ; multiply the half sum and the three remainders together,...square root of the product will be the area required. For, let ABC be a triangle whose three sides, AB, BC, AC, are given, but not the altitude CD, and let...
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## Elements of Geometry: With Practical Applications to Mensuration

Benjamin Greenleaf - 1863 - 320 sider
...Ans. 12 A. 20 P. PROBLEM IX. 622. To find the area of a TRIANGLE, the three sides being given. side ; multiply the half sum and the three remainders together,...square root of the product will be the area required. For, let ABC be a triangle whose three sides, AB, BC, AC, are given, but not the altitude CD, and let...
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## The Practical Model Calculator, for the Engineer, Mechanic, Machinist ...

Oliver Byrne - 1863 - 588 sider
...= 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 will be the area required Required the area...
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## ELEMENTS OF GEOMETRY AND TRIGONOMETRY; WITH PRACTICAL APPLICATIONS.

BENJAMIN GREENLEAF - 1863
...Ans. 12 A. 20 P. PROBLEM IX. 622. To find the area of a TRIANGLE, the three sides being given. side ; multiply the half sum and the three remainders together, and the square root of the product ivill be the area required. For, let AB C be a triangle whose three C sides, AB, BC, AC, are given,...
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## GAS SUPERINTENDENT'S POCKET COMPANION FOR HTE YEAR 1866.

...— Area from three sides given. From the half 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. 4. TRAPEZOID — the sum of the two parallel sides X by half the perpendicular height. 5. CIRCLE =...
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## The Builder's Pocket Companion: Containing the Elements of Building ...

A. C. Smeaton - 1867 - 273 sider
...sides. RULE. Add the three sides together, and from half the sum subtract each side separately ; then multiply the half sum and the three remainders together,...square root of the product will be the area required. Let the sides of a triangle be 30, 40, and 50 feet, respectively, what will be the area ? 30 + 40 +...
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## Elements of Plane and Solid Geometry: And of Plane and Spherical ...

Gerardus Beekman Docharty - 1867 - 283 sider
...derive the following RULES. from half the sum of the three sides ml/tract each side separately ; then multiply the half sum and the three remainders together, and the square root of their continued product will b« the area of the triangle. Or, RULE n. Add together the logarithms...
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## Elements of Geometry: With Practical Applications to Mensuration

Benjamin Greenleaf - 1868 - 320 sider
...Ans. 12 A. 20 P. PROBLEM IX. 622. To find the area of a TRIANGLE, the three sides being given. side ; multiply the half sum and the three remainders together,...square root of the product will be the area required. For, let ABC be a triangle whose three sides, AB, BC, AC, are given, but not the altitude CD, and let...
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## A complete treatise on practical land-surveying

Anthony Nesbit - 1870
...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 product will be the area required. This method...
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## Explanatory mensuration for the use of schools

Alfred Hiley - 1871
...when the three sides are given. Prom 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 is the area. THE TRIANGLE. Kg. 3. sion are given. — (a) Divide double the area by the base, and the...
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