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الكتب الكتب 1 - 10 من 34 فيMultiply the sum of the two parallel sides by the perpendicular distance between....
" Multiply the sum of the two parallel sides by the perpendicular distance between them, and half the product will be the area. "
Cyclopedia of Architecture: Historical, Descriptive, Typographical ... - الصفحة 282
بواسطة Robert Stuart - 1854
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Mathematics: Compiled from the Best Authors and Intended to be the ..., المجلد 2

1801
...the street. • t Ans. 76- 1 2333 35 feet. PROBLEM IV. 7o f:nd tlie area of a trapezoid. • RULE.* Multiply the sum of the two parallel sides by the...between them, and half the product will be the area. • EXAMPLES. * DEMONSTRATION. or (because B»=DE) =-, .-. A ABD+ A BCD, or , , , ABxDE , DCxDE the...
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The American Tutor's Guide: Being a Compendium of Arithmetic. In Six Parts ...

James Thompson - 1808 - عدد الصفحات: 172
...trafiezoid, or quadrangle, <u'o cf •whose opposite sides are parallel. RULE — Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product •will be the area. EXAMPLES. 13. Required the area of a trapezoid whose parallel sidef »re 25 feel 6 inches, and 18 feet...
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A Treatise on Practical Gauging

Anthony Nesbit, W. Little - 1822 - عدد الصفحات: 533
...the grain? Ant. 97.3383 bushels. PROBLEM VII. To Jind the area of a trapezoid. RULE. • By the Pen. Multiply the sum of the two parallel sides by the...between them, and half the product will be the area in square inches. Divide this area by 2 82, 231, and 2150.42, and the respective quotients will be...
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A Treatise on Practical Mensuration in Eight Parts ...

Anthony Nesbit - 1824 - عدد الصفحات: 434
...Ans. 1131^.2 in. 9 pa. PROBLEM VIII. To find the area of a Irapezoid. RULE. Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the area. Or, half the sum of the sides multiplied by their distance will give the area. EXAMPLE. 1. What is...
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The Operative Mechanic, and British Machinist: Being a Practical ..., المجلد 1

John Nicholson - 1825 - عدد الصفحات: 795
...when the squre of AB has been subtracted. 63 I 189 3 1 189 Prot. 4. To find the Area ofaTrapezoid. Multiply the sum of the two parallel sides by the...perpendicular distance AP or CN is 9 : required the area. 7 12 19 9 171 85£ the area. Prob. 5. To find the Area of a Trapezium. Case for any trapezium. — Divide...
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The operative mechanic, and British machinist

John Nicholson (civil engineer.) - 1825
...Prob. 4. To find the Area of aTrapezoid. Multiply the sum of the two parallel sides by the perpendini distance between them, and half the product will be...In a trapezoid, the parallel sides are AB 7, and CD I: and the perpendicular distance AP or CN is 9 : required the area, 7 12 19 9 171 85$ the area. Pfot....
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A Treatise on the New Method of Land Surveying, with the Improved Plan of ...

Thomas Hornby (land surveyor.) - 1827 - عدد الصفحات: 270
...16.00000 Ans. 0A. 2n. 16p. PROBLEM 3. To find the Area of a Trapezoid. RULE. Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the area. EXAMPLE. Required the area of the trapezoid AB CD, whose parallel sides AB and DC are 800 and 640 links...
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An Introduction to Mensuration and Practical Geometry

John Bonnycastle - 1829 - عدد الصفحات: 252
...trapezoid, or a quadrangle, two of whose opposite sides are parallel. RULE.* Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the EXAMPLES. 1. Required the area of the trapezoid ABCD, whose sides AB and DC are 321.51 and 214.24,...
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The Builder's Practical Guide: Containing a Complete Explanation of the ...

John Nicholson (civil engineer.) - 1830 - عدد الصفحات: 182
...when the square 63 I 189 of AB has been subtracted. 3 I 189 Prob. 4. To find the Area of aTrapezoid. Multiply the sum of the two parallel sides by the...perpendicular distance AP or CN is 9 : required the area. 7 12 19 9 171 855 the area. Prob. 5. To find the Area of a Trapezium. Case for any trapezium.— Divide...
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The Edinburgh encyclopaedia, conducted by D. Brewster

Edinburgh encyclopaedia - 1830
...quadrilateral, of which two opposite sides are parallel but not equal. RULE. Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product is the area. In the trapezoid ABCD, draw the diagonal AC, and from its extremities draw AE, CF at right...
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