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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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Elements of Geometry and Trigonometry: With an Easy and Concise System of ...

James Hale - 1829 - 115 ページ
...Perpendicular. RULE 2. If the three Sides of a Triangle be given, its Area may be thus obtained: — From half the sum of the three Sides, subtract each Side severally, then extract the Square Root of the continued Product of the half sum and three remainder for the Area....

Conkling's Arithmetic: The Young Arithmetician's Guide to a Knowledge of ...

Thomas Conkling (W.) - 1831 - 275 ページ
...three lines or sides. PROBLEM3. When the sides of a triangle are given, to find the content. . ' ' . RULE. From half the sum of the three sides, subtract each side severally; then, multiply that half sum and the three remainders together; and the sqipre root of the last product...

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

William Kinne - 1831 - 240 ページ
...the corner a true rightangle. RULE 2.— To find the area of any triangle when the thret 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...

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

Robert Gibson - 1832 - 348 ページ
...problem will be evident. PROBLEM VIII. The three' tidet 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 half the sum and three remainders, and half their total will be the logarithm...

A system of practical arithmetic, comprehending numerous rules and examples ...

Samuel YOUNG (of Manchester.) - 1833
...many acres does it contain ? When the three sides only are given. RULE 2. From half the sum of the sides subtract each side severally : multiply the half sum and the three Remainders continually together, and the square root of their Product will be the area. (3) How many acres are...

The Tutor's Assistant: Being a Compendium of Practical Arithmetic, for the ...

Francis Walkingame - 1833
...base, 9 feet 4 inches ? ADB RULE 2. When the three sides only are given. — From half the sum of the sides subtract each side severally: multiply the half sum and the three remainders continually together ; and the square root of their product will be the area. (3) The three sides of...

The American Student's Guide: Containing a Compendious System of Theoretical ...

George Alfred - 1834 - 312 ページ
...the perpendicular CD Э6 ; what is the area in acres, &c. ? ADS. 14 acres 2 roods 32 poks PROBLEM 7. To find the area of a triangle when the three sides...half the sum of the three sides subtract each side several! y, then multiply the half sum and the three remainders continually together, and the square...

The artillerist's manual, and compendium of infantry exercise

Frederick Augustus Griffiths - 1839
...half the product will be the area. To find the area of a triangle whose three sides are given.—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. Two sides of a right angled...

The artillerist's manual, and compendium of infantry exercise

Frederick Augustus Griffiths - 1840
....?i__ =140 Square yards. Area required. To find the Area of a Triangle, whose three Sides are given. From half the sum of the three sides, subtract each...; multiply the half sum, and the three remainders together, and the square root of the product will be the Area required. Example. — Required the Area...

First Lessons in Geometry: With Practical Applications in Mensuration, and ...

Charles Davies - 1840 - 252 ページ
...triangle whose base is 72,7 yards, and altitude 36,5 yards 1 Ans. 1326,775 sq. yds. PROBLEM III. 10. To find the area of a triangle when the three sides are known. RULE. 1st. Add the three sides together and take half their sum. Mensuration of Surt'acfs. 2nd....




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