Gore, James Howard, 1856-1939 · New York, Longmans, Green, and co. · leaf 197
evolution, and L the slant height,then lateral area = \ r [2 irR + 2 7rR~\ x L = TT (72 + R) x L. EXERCISES. 1. The radius of the lower base of the frustum of a cone of revolutionis 12, the radius of the upper base is 0 and the altitude 8. Find thelateral area. 2. In the above what is the lateral… … Let V-ABC and V-ABC be two triangular pyramidshaving equivalent bases ABC and ABC1 and a commonaltitude. To prove vol. V-ABC = vol. V-ABC. Divide the common altitude into any number of equal parts,and through these points of division pass planes parallel tothe plane of the bases, say DEF, DEF; GHI,…
Geometry
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