The complete measurer; or, The whole art of measuring .. (1789)
Hawney, William · London : Rivington · leaf 129
tof.nd the Length of the Arch Line, feveral Ways. L 2 To 3 12 Menfuration of Superficies, Part IL^0 find the Length of the Arch Line. Muldply, continually, the Radius, the Numbercf Degrees in the given Arch, and the Number* .0174^329 ; the Produd will be the Length of di^Arch-line ACB. Another Way.… … 19 88 AC 158.4344 AB 5)124 Arch Line 41.333 * When the Radius is i the Semi-circumferenQe of the Cir-cle is ^.14.159265, &c. and this Number divided by i8o, theDegrees in a Semicircle, gives .01745329 for the Length of oneDegree when the Radius is Unity. Another Chap. r. Menjuratlon of…
Measurement · Geometry
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
