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" To measure a parallelogram, or long square. RULE. Multiply the length by the breadth, and the product will be the area, or superficial content. "
Daboll's Schoolmaster's Assistant: Improved and Enlarged, Being a Plain ... - Σελίδα 204
των Nathan Daboll - 1831 - 240 σελίδες
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Elements of Drawing and Mensuration Applied to the Mechanic Arts: A Book for ...

Charles Davies - 1846 - 240 σελίδες
...give the more accurate methods by means of figures. 2. How do you find the area of a board, or plank? Multiply the length by the breadth, and the product will be the content required. 3. How do you find it when the board tapers ? If the board is tapering, add the breadths...

The Columbian Calculator; Being a Practical and Concise System of Decimal ...

Almon Ticknor - 1846 - 264 σελίδες
...sides are perpendicular to each other (right-angled), but the adjacent side's are longer and parallel. RULE. Multiply the length by the breadth, and the product will be thejanswer. 1. A. garden is 76 feet in length, and 42 feet in width ; how many square feet of ground...

A Complete Treatise on Practical Land-surveying: In All Its Departments ...

Anthony Nesbit - 1847 - 426 σελίδες
...angles right-angles, and the opposite sides equal, the figure is a rectangle. TO COMPUTE THE CONTENT. RULE. — Multiply the length by the breadth, and the product will be the area. EXAMPLES. 1. What is the area of the rectangle ABCD, whose length AB is 1235 links, and breadth AD,...

The United States Arithmetic: Designed for Academies and Schools

William Vogdes - 1847 - 256 σελίδες
...come to, at 6 cents per light ? PAVERS' WORK. § !ü O !t. Pavers' work is done by the square yard. RULE. Multiply the length by the breadth, and the product will be the content ? EXAMPLES. 1. The length of a rectangular yard is 45 feet, and the oreadth 18 feet 9 inches...

Principles of geometry, mensuration, trigonometry, land-surveying, and ...

Thomas Tate (mathematical master.) - 1848
...(Art. 39.) by AB. BC or AB2. Hence we have the following rule for finding the area of a rectangle. Rule. — Multiply the length by the breadth, and the product will be the area of the rectangle. Ex. (1.) Required the area of a rectangle whose length is 9 ft. and breadth 7 ft....

Arithmetic: In which the Principles of Operating by Numbers are Analytically ...

Daniel Adams - 1848 - 306 σελίδες
...multiply the number of squares in one row by the number of rows ; 5X3=15 square rods, Ans. ' Hence the RULE. Multiply the length by the breadth, and the product will be the square contents. NOTE. — Three times a line irods long is a line 15 rods long. Hence the pupil must...

An Introduction to Mensuration and Practical Geometry

John Bonnycastle - 1848 - 288 σελίδες
..." • " OF TIMBER MEASURE. PROBLEM I. To find the area, or superficial content of a board or plank RULE. MULTIPLY the length by the breadth, and the product will be the content required. Note. — When the board is tapering, add the breadths of the two ends together,...

Adam's New Arithmetic: Arithmetic, in which the Principles of Operating by ...

Daniel Adams - 1848 - 306 σελίδες
...multiply the number of squares ill one row by the number of rows ; 5 X 3 = 15 square rods, Am. Hence the RULE. Multiply the length by the breadth, and the product will be the square contents. NOTE. — Three times a line 5 tods long is a line 15 rods long. Hence the pupil must...

Daboll's Complete Schoolmaster's Assistant: Being a Plain Comprehensive ...

Nathan Daboll, David Austin Daboll - 1849 - 249 σελίδες
...whole number of square rods to neres.] Ans. 26 acres 1 r. 25 rods. PROS. ii. — To find the area of a parallelogram, or long square. RULE. Multiply the...by the breadth, and the product will be the area. EXAMPLES. 1. How many square yards of ground are contained in a garden •which is 126 feet long and...

Mensuration, Mechanical Powers and Machinery: The Principles of Mensuration ...

Daniel Adams - 1849 - 128 σελίδες
...&c. IT 37. The length and breadth of a square or rectangle being given, to find the square contents. RULE. Multiply the length by the breadth, and the product will be the square contents. NOTE. For an analysis of the principles of this and the following rule, see Revised...




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