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 218
V3600=60 ft., side of the garden. .*. 60 ft. = the side of the garden. PROBLEM 403. What is the area of a square whose diagonal is 10 ft.? Solution. (1) 10 ft. = the diagonal = AC. (2) 10X10 = 100 sq. ft. (3) 100 sq. ft.-i-2 = 50 sq. ft., the area of the square. Rule.—Divide the square of the… … FIG. 84. PROBLEM 405. If the square ABCD has 40 acres in it, find the distance from C toa point & the distance from B to A, as F. 204 FAIRCHILDS SOLUTION BOOK. (1)(2)(3)(4) Solution.BD2=40 acres, or 6400 sq. rd.AB = V6400=80 rd. FB iof 80rd. = 16rd. Now, as FCB is a right-angled tri angle, FC=…
Arithmetic · Geometry
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