The complete measurer; or, The whole art of measuring .. (1789)
Hawney, William · London : Rivington · leaf 136
s than the Diameter, called aChord, and by a Part of tlie Circumference. To find the Area of the Segment of a Circle, youmufl, firit, find the Center of the whole Circle, anddraw the two Semidiameters, thereby completing theSe*^or, as in the following Figure. Ihen (by thelall Sedion), find the Area… … Chap. I. Mevjuraticn of Superjicies, 119 Otheruife youmay, witliout de-fcribing the Fi-gure, find the Se-midiameter of thsCircle bythe Rule{Pag. 115.) r.ndby the Rule {Pag. I! 2.) find the ^ Arch Line ; then ^ mulciplv half -he Arch Line by the Semidiameter ;{o have you the Area of che Sedor : Then…
Measurement · Geometry
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