Legendre, A. M. (Adrien Marie), 1752-1833, Brewster, David, Sir, 1781-1868, Davies, Charles, 1798-1876 · New York, Wiley & Long · leaf 173
G and DC lor ihc radii of its base?, the vertex ofthe whole cone being 8. Hence this surface ^vill be measuredas wo have saiil. This measure will always hold good, even when the point1) falls on 8, ami thus ibrms a whole cone ; and also when theline AD is parallel to tlie axis, and thus forms a… … Let SO be the altitude of a cone,OA t!ie radius of its base, and letthe area of the base be designatedby area OA : it is to be j)roved thatthe soliditv of the cone is equal toarea OAx^SO. Inscribe in the base of the coneany regular polyijon AHDl^F, andjoin the vertices A, B, C, A:c. withliie vertex…
Trigonometry · Geometry
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