Scribner's engineers' and mechanics' companion : comprising United States' weights and measures : mensuration of superficies and solids ... the mechanical powers ... steam and the steam engine (1848)
Scribner, J. M · New York : Huntington and Savage · leaf 61
--1728 = 12-22 cubic ft. Ano1222 x 169=2065 lbs. Ans. OF PYRAMIDS.PROBLEM III. To find the Lateral Surface of a Regular Pyramid. Rule.—Multiply the perimeter of the baseoy the slant height, and half the product will bethe surface. If the whole surface be required,add to this the area of the base.… … 2)480240=lateral surface. PROBLEM IV. To find the Lateral Surface of the Frustrum of a Regular Pyramid.Rule.—Multiply the perimeters of the two ends by the slant heightof the frustrum, and half the product will be the surface required.To this add the surface of the two ends when the entire surface…
Mechanical engineering · Weights and measures
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