The complete measurer; or, The whole art of measuring .. (1789)
Hawney, William · London : Rivington · leaf 127
ies. Part II.§ X. Of a Semicircle. I O find the Area of a Semicircle, this is The RULE. Multiply the fourth Part of the Circumference ofthe wKole Circle (that is, half the Arch Line) by theSemidiameter, the Produ6l is the Area. Let ABC be a Semi-circle, vvhofe Diame-ter is 22.65 and the…
Measurement · Geometry
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
