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
ce, 52 X n = 78.53 sq. ft. .*. 78.53 sq. ft. is the required area. PROBLEM 313. A ladder stands against the side of a house; if it is pulled out at thebottom 16 ft., it will not reach the top by 4 ft., and it is long enoughto reach the top: find the length of the ladder. Solution. (1) Let DC =… … FIG. 14. Let b = AD, or 4 ft. = the distancedown when it was pulled out 16 ft. (6) aa = the area of the rectangles ES and SC the area of the square DS. (7) .-. FO — FG2 = aab\ or 16* = 256 sq. ft. the ladder slippedand b2 — 144 FAIRCHILDS SOLUTION BOOK. (8) aab1 — b2 = 240 sq. ft., the area of the…
Arithmetic · Geometry
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