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 181
e area=|52V3. (4) Draw AFB^AOB. With B as a center and b as aradius, describe the circleFOD. With C as a centerand fas a radius, describethe circle DOE. Join EF,FD and DE. fig. 43. (5) Now angle EAF=2 times angle CAB = 120°. (6) /. EFis equal to a side of an equilateral triangle inscribed in a… … MENSURATION. 16? (9) .-. The area of the entire polygon AFBDCE=1731.9935sq. rd. (10) But this is double the area of triangle ABC. .. Area of triangle ABC=875 996785 sq. rd. (11) Equating the two expressions for the area, we have tj»V3=875.996785 sq. rd. .-. j=44 97874 rd., the side of the triangle…
Arithmetic · Geometry
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
