RULE.* To the sum of the areas of the two ends add four times the area of a section parallel to and equally distant from both ends, and this last sum multiplied by £ of the height will give the solidity. A Treatise on Surveying and Civil Engineering, Wherein Everything that is ... - Page 68 by P. O'Shaughnessy (Civil engineer) - 1848 - 98 pages Full view -
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