A textbook on mechanical and electrical engineering (1898)
International Correspondence Schools · Scranton : International Textbook Co., [1898-99] · leaf 304
al area equals8-inch circle — 4-inch cir-cle — segment A B + rect-angle A B G F-\- 2 times thetriangle C D E + 2 times thetriangle B S T + 2 timesthe rectangle D E S B+ the rectangle HIK L-f 2 times the rectangleL M N B + 2 times thetriangle M O N. 8-^ X .7854 = 50.27d-A X .7854 = 12.57 d. The… … ^-^H 44 05Area of sector = 50.27 X -tttttt = 6.15 a . obO The altitude of the triangle = 4 X cos 22= 1 27 = 3.71 inches. 3 71 X 3 The area of the triangle = ——^ = 5.56 n . The area of the segment = 6.15 — 5.56 = 0.59 n . The area of the rectangle A BG F= (15 - 3.71) X 3 = 33.87 n . In the triangle…
Electrical engineering · Mechanical engineering
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