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 224
DC : CB :: DS : HS,and DS = 2.25 ft. (4) DC :CB::GF: FB, from which FB—1 ft. (5) The total area of the four triangles is 4.875 sq. ft. (6) DC2 + BC* = DB2, from this we find DB=593.23+ ft. (7) 593 23 ft.—3 25 ft. (DS+1) =589.98+ ft., SFor IK. (8) 589.98x3 ft. =1769.94+ sq. ft., area of the two… … fk;. *>4. (1) Let A BCD be the field. (2) Its area is13J- X 160 =2160 sq. rd. (3) AssumeABCD asa similar fieldwhose sidesare DA = 5, AB=lL\ (4) Then, similar figures are to each other as the squares oftheir like dimensions. (5) Area of ABCD=5X 12=60 sq. rd. (6) We have ABCD : ABCD : A^2 : AD2,…
Arithmetic · Geometry
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