A practical course in mechanical drawing for individual study and shop classes, trade and high schools (1912)
Willard, William Franklin, 1879- · Chicago : Popular mechanics company · leaf 102
Fig. 101 … Fig:- 102 100 A PRACTICAL COURSE IN The following formulas are self-evident and shouldbe committed to memory: 27rR = the circumference of a circle. 7rR2 ziz area of a circle. (7rR2)L = volume of a cylinder when L altitudcc (27rR)L = lateral surface of cylinder. (7rR^)L/3 = volume of cone.…
Mechanical drawing
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