The Description and Use of the Sliding Rule, in Arithmetic, and in the Mensuration of Surfaces and Solids: Also, the Description of the Ship Carpenter's Sliding Rule, and Its Use Applied to the Construction of Masts, Yards, &c. Together with the Description and Use of the Guaging Rule, Gauging Rod, & Ullage Rule

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Oliphant, Waugh, and Innes, 1811 - Mathematical instruments - 138 pages
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Page 64 - RULE. from half the sum of the three sides, subtract each side separately; multiply the half sum and the three remainders together, and the square root of the product will be the area required.
Page 84 - Regular or platonic bodies, are comprehended by like, equal, and regular plane figures, and whose solid angles are all equal.
Page 30 - Multiply the square root of half the sum of the squares of the two axes by *, and the product will be nearly = the circumference. Ex. Taking the same example as before, we hare /24' + IT \/ = — X 3,14159 = 66,6433= the circumference nearly.
Page 43 - To find the side of a square, equal in area to a circle whose diameter or circumference is given, — RULE.
Page 82 - Threefifths of the Breadth, the Remainder shall be esteemed the just Length of the Keel to find the Tonnage, — and the Breadth shall be taken from the Outside of the outside Plank in the broadest Part of the...
Page 129 - ... the sum, rejecting 10 from the index, will be the logarithm of the tonnage required.

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