A hand book of general instruction for mechanics, containing useful rules and memoranda for practical men (1907)
Smith, Franklin Elijah, 1872- · New York, D. Van Nostrand company · leaf 241
Fig. 4o 3.1416 5 15.7080 = circumference 15 = height 785400157080 235.6200 sq. in. Ans.Example. What is the number of square inches inthe outside surface of an elliptical tube whose diametersare 2 and 4 inches and whose length is 12 inches? (Fig. 46.) … Fig. 46 CIRCULAR MEASURE 229 3.14163 half sum of diameters 9.4248 = circumference 12 113.0976 sq. in. Ans. Circular Areas Example. Find the area of metal in a ring whose outerdiameter is 13 inchesand inner diameter 9inches. (Fig. 47.) First find the areaof the outer diameter.Next find the area…
Mechanics · Arithmetic · Measurement
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