Scribner's engineers' and mechanics' companion : comprising United States' weights and measures : mensuration of superficies and solids ... the mechanical powers ... steam and the steam engine (1848)
Scribner, J. M · New York : Huntington and Savage · leaf 41
diusof the circumscribing circle. OF IRREGULAR BODIES. To find the Area of an Irregular Polygon.Rule.—Draw diagonals to divide the figure into trapeziums andtriangles ; find the area of each separately, and the sum of the wholewill give the area required.4 38 MENSURATIO. What is the area of the… … PROBLEM VI. To find the Area of a long Irregular Figure, bounded on one side by a straight line. Rule.—1. Measure the breadth in several places, and at equaldistances from each other. 2. Add together all the different breadths, and half the sum of thetwo extremes. , 3. Multiply this sum by the base…
Mechanical engineering · Weights and measures
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-68-46.webp)
