A textbook on mechanical and electrical engineering (1898)
International Correspondence Schools · Scranton : International Textbook Co., [1898-99] · leaf 516
rea of this rect-angle will evidently be the same as the area of the semi-circle. 1158. Rule.—No matter tvhat the shape of an area maybe, if any line be drawjt through it and limited by lines per-pendicular to it, and tangent to the bounding line of the area,the product of the length of this line,…
Electrical engineering · Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
