A complete and practical solution book for the common school teacher (1899)
Fairchild, J[ohn] T[heodore] [from old catalog] · Crawfis College, Ohio, The author · leaf 158
MENSURA riON. 143 … Solution. (1) Let AC = 20 ft., the base of the triangle ABC, and BC= 15 ft., the altitude. (2) AB, the hypothenuse = V(AC2 -h~BC2), or 25 ft. (3) FDE = the inscribed circle; OD, OF, OE = the radii fig. is. of the inscribed circle. (4) ^(AC X BC) = 150 sq. ft., the area of the AACB. (5) The radius…
Arithmetic · Geometry
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