Haswell, Charles Haynes, 1809- [from old catalog] · New York, Harper & brothers · leaf 261
thof the two chords by half their difference; divide this product by thebreadth of the zone, and to the quotient add the breadth. To thesquare of this sum add the square of the lesser chord, and the squareroot of their sum will give the diameter of the sphere. SPHEROIDS OR ELLIPSOIDS.… … MENSURATION OF AREAS, LINES, AND SURFACES. 257 To Compute the Surface of a Spheroid—Fig. 33. When the Spheroid is Prolate.Rule.—Square the diameters, and multiply the square root of halftheir sum by 3.1416, and this product by the conjugate diameter. Fig. 23. Or, , ./ —2— x 3-1416 X d = surface, d…
Engineering · Mechanical engineering
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