Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes and company · leaf 262
PROBLEM XII. To rind the convex surface of a cylindrical ring. RULE. I. To the thickness of the ring add the inner diameter. II. Multiply this sum by the thickness, and the poduel9.8696, the result will be the area. OF GEO IYI E T R Y 26 Mensuration of Cylindrical Rings … EXAMPLES. 1. The thickness A c, of a cylindri-cal ring is 3 inches, and the innerdiameter cd, is 12 inches : what is(lie convex surface ? Ac+cd — 3 (-12 = 15:15x3x9.8696 = 444.132 squareinches = the surface. 2. The thickness of a c* lindrical ring is 4 inches, and theinner diameter 18 inches : what…
Geometry · Plane trigonometry
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