The naval architect's and shipbuilder's pocket-book of formulae, rules, and tables and marine engineer's and surveyor's handy book of reference (1884)
Mackrow, Clement · London, C. Lockwood and co. · leaf 86
ansverse sectional2^lane, as pab. EuLE.—Divide the Fig. 117. solid by a number ofparallel and equidistantplanes, as pab, PjAjB,,P2A0B2, &c.; then mul-tiph each sectional areaby its distance from theplane pab ; treat theproducts as though thej*were the ordinates of a curve of the same length as… … £d -e* 78 MOMENTS OF INERTIA. 2nd. Determine the perpendicular distance of its centre re-latively to a lonyitudinaL plane passing through its edge, as MPM,perpendicular to the first radius, pb. Rule.—Divide the figure by a nnuiber of longitudinalplanes radiating from the edge MPM at equiangular…