. The prospector's field-book and guide in the search for and the easy determination of ores and other useful minerals. is the base of the one and C B that of the Fig. 31, the area, A C D B E K, may be re-solved into the four triangles, AC D, A D B, ABEand A E K. The perpendiculars of Fig. 30 are. ED and CF. Those of Fig. 31 are CH, IB,F E, and K G, and the length of bases may bemultiplied into half that of the perpendiculars, asin the case already given, and the feet be reducedto acres, rods, etc., or miles. SURVEYING. 75 For the number of square feet in an acre, etc.,see Appendix No
. The prospector's field-book and guide in the search for and the easy determination of ores and other useful minerals. is the base of the one and C B that of the Fig. 31, the area, A C D B E K, may be re-solved into the four triangles, AC D, A D B, ABEand A E K. The perpendiculars of Fig. 30 are. ED and CF. Those of Fig. 31 are CH, IB,F E, and K G, and the length of bases may bemultiplied into half that of the perpendiculars, asin the case already given, and the feet be reducedto acres, rods, etc., or miles. SURVEYING. 75 For the number of square feet in an acre, etc.,see Appendix No. 3, and treat it thus: Suppose thearea of Fig. 31 be 80,000 sq. ft., then according to
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectprospec, bookyear1903
