Elements of geometry and trigonometry. Revised and adapted to the course of mathematical instruction in the United States (1856)
Legendre, A. M. (Adrien Marie), 1752-1833, Davies, Charles, 1798-1876 · New York : A.S. Barnes · leaf 226
he pohgons will be the sphere; and whenwe T>ass to the limit the expression for the solidity willbecome ^^XOAXFA, or by substituting 2 0A for .£.1, itbecomes J-rx O/FX 0^1, which is also equal to 4:tX0AX o i OA. But 4-^x0^ is equal to the surface of the sphere(p. X., c. 1): hence, the solidity… … 222 GEOMETRY,
Geometry · Trigonometry
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