Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 309
el cross-f ection Hence the entire cubical contents of the of centre height h for its altitude one half prismoidal foot. If we neglect the term i r (hy — lirf and place aA^j + V)]- C = l[i(wh1+rhr~)+i{wh2 + rh2*)-]. (3.) = l^voh1 + lwh2+irhli+^rh1h2+ we shall have the volume of the solid as given… … and tabulate the quantities obtained by ft. and the ratio of side slope 1| to 1. giving different values to h in the expres- A certain prismoid has level cross-sec- tions with centre heights respectively 4.5 sion -- — or j ^ *s evident that to com- ft. and 2.3 ft. pute by " end areas" we have only…
Engineering
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