Haswell, Charles Haynes, 1809- [from old catalog] · New York, Harper & brothers · leaf 262
le.—A prolate spheroid has diameters of 10 and14 inches ; what is its surface ? 102 +142 = 296 = sum of squares of diameters.296 -j- 2 = 148, and y/U8 == 12.1655 — square root of half the sum, of the squares of the diameters.12.1655x3.1416x10 r=332.191 ins. =product of root above obtained X3.1416,… … Or, •/■ tfa + o/: X3.1416xd = surface, d representing transverse diameter. Example.—An oblate spheroid has diameters of 14 and 10 inches; what is itssurface ? 142 -4-102 — 296 = sum of squares of diameters.296 -4- 2 = 148, and -/148 == 12.1655 = square root of half the sum of the squares of the…
Engineering · Mechanical engineering
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