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書籍 To find the Area of a Triangle when the Three Sides are given. Rule. — From half... の書籍検索結果
" To find the Area of a Triangle when the Three Sides are given. Rule. — From half the sum of the three sides subtract each side separately. "
A Treatise on Surveying, Containing the Theory and Practice: To which is ... - 97 ページ
John Gummere 著 - 1814 - 346 ページ
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The Tutor's Guide, Being a Complete System of Arithmetic: With Various ...

Charles Vyse - 1806 - 320 ページ
...let at per Acre ? Case 2. When the three Sides of a Triangle are given, to find the Area. RULE. 3. From Half the Sum of the three Sides subtract each...severally ; multiply the Half Sum and the three Remainders continually together, and the Square Root of the last Produdl will be the Area of the Triangle, that...

A Treatise of Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - 1806 - 452 ページ
...following problem will be evident. PROBLEM VIII. Three sides of a plane triangle given t0 find the area. RULE. From half the sum of the three sides subtract each side severally ; take the logarithms of half the sum and three remainders, anil half their total will be the logarithm...

The principles of architecture, 第 1 巻

Peter Nicholson - 1809
...f. i ii PROBLEM III. To find the area of a triangle, whose three sides only are given. From the half 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. EXAMPLE I. Rcquireth the area...

The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1811 - 508 ページ
...following problem will be evident. PROB. nil. The three sides of a filane triangle given to find the area. RULE. From half the sum of the three sides subtract each side severally ; take the logarithms of half the sum and three remainders, and half their total will be the logarithm...

The Tutor's Guide: Being a Complete System of Arithmetic; with Various ...

Charles Vyse - 1815 - 320 ページ
...let at per acre ? Case 2. When the three sides of a triangle are given, to find the area. i RULE. 3. From half the sum of the three sides subtract each side severally ; multiply the half cum and the three remainders continually together, and the square root of the Iast product will be...

A Treatise on Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - 1818 - 478 ページ
...problem will be evident. PROB. VIII. Tlie three sides of a plane triangle given, to find the area. RULE. From half the sum of the three sides subtract each side severally ; take the logarithms of the half sum and three remainders, and half their total will be the logarithm...

A treatise of practical mensuration

Anthony Nesbit - 1824 - 434 ページ
...rood ? Ans. £6 4*. 7 \d. , PROBLEM V. To find the area of a triangle, the three sides only of which are given. RULE. From half the sum of the three sides...severally ; 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. Jvofe...

A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - 1825 - 372 ページ
...52 Ofi2.5 Prob. 3. To find the area of a triangle, whose three sides only are given. From the half 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. Едг. Requireth the area...

A Short System of Practical Arithmetic: Compiled from the Best Authorities ...

William Kinne - 1829
...the corner a true right-angle. RULE 2. — To find the 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 of the last...

An Introduction to Mensuration and Practical Geometry

John Bonnycastle - 1829 - 252 ページ
...102. 5/e. PROBLEM III. To find the area of a triangle whose three sides only are given. RULE.* . 1 . From half the sum of the three sides subtract each side severally. * Demon. Let AC— a, ±3=b, uc=c, and AD=a:; (See preceding fig.) Then, since BD=&— x, we shall...




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