Palmer's Pocket Scale: With Rules for Its Use in Solving Arithmetical and Geometrical Problems

Aaron Palmer, 1845 - 48 σελίδες

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Σελίδα 29 - Divide trie square of the given diameter by 2, and extract tJie square root of the quotient. (Art. 581. Obs. 1.) 17. The diameter of a round table is 4 ft. ; what is the side of the greatest square table which can be made from it 1 631.
Σελίδα 22 - If a piece of land be 5 rods wide, how many rods in length will make an acre ? RULE. — Divide 160 by the width, and the jw> tient will be the length required; thus, 5)160 NOTE.
Σελίδα 39 - Also, as a cubic foot of water weighs just 1000 ounces avoirdupois5 the numbers in the table express, not only the specific gravities of the several bodies, but also the weight of a cubic foot of each in avoirdupois ounces ; and hence, by proportion, the weight of any other quantity, or the quantity of any other weight, may be known, as in the following problems.
Σελίδα 28 - Ans. 19 ares 63.5 centares. 8. What is the side of a square equal in area to a circular plat 50 feet in diameter ? Ans.
Σελίδα 25 - CONTENTS OF A PYRAMID. RULE. — Multiply the area of the base by | of the perpendicular height, whether it be a square, triangular, or circular pyramid.
Σελίδα 13 - To multiply a whole number by a fraction, or a fraction by a -whole number, RULE.
Σελίδα 3 - ... circular form. With a diameter of about eight inches, it is equivalent to a common sliding scale of four feet with its slide of the same length, making, when drawn out, a rod of about eight feet in length." Mr. Julius Bates, MA, Principal of Collegiate Institute in Brockport, assures the public that "all the problems in arithmetic can be readily solved upon it, and most of them with great expedition, particularly the rules for computing interest for months and days, at any per cent., the rule...
Σελίδα 39 - Note. The several sorts of wood are supposed to be dry. Also as a cubic foot of water weighs just 1000 ounces, avoirdupois, the numbers in this table express not only the specific gravities of the several bodies, but also the weight of a cubic foot of each, in avoirdupois ounces ; and...
Σελίδα 1 - ... the public with the following notice : This Scale (the result of three years' incessant labor) is designed as an assistant in all arithmetical calculations. The simplicity, rapidity, and accuracy of its results have astonished our best mathematicians. It consists of a logarithmic combination of numbers, arranged in two or more circles, one of which is made to revolve within the other ; which process constantly changes the relation of the figures to each other, and solves an infinite variety of...

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