Haswell's engineers' and mechanics' pocket-book .. (1844)
Haswell, Chas. H. (Charles Haynes), 1809-1907 · New York, Harper & brothers · leaf 74
ical Ring—fig. 54.I^uiE.—To the thickness of the ring ab add the inner diameterc ; multiply this sum by the thickness, and the product by 9.8696,nd it will give the surface required. To find the Area of a Circular Ring—fig. 54.Rule —The difference of the areas of the two circles will be thearea of… … n To find the Area of a Cycloid—fig. 22.Rule.—Multiply area of generating circle a 6 c by 3, and the prod-uct is the area. * If semicircles be described on the three sides of a right-angled triangle as diame-ters, two iunes will be formed, their united areas being equal to the area ol tne wiangle.…
Engineering · Mechanical engineering
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