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 229
re farm contains 40 acres. It is required to lay off anotherpark containing- the same area, enclosed by an iron fence forming- cir-cular arcs only, and to find the cost of such a fence at $2 per rd. Solution (1) Let ABCD represent the square farm, whosesides AB, BC=V40X160=80 rd. (2) With a radius… … FIG. 100. MENSURA TWN. 215 (4) The fence required is the length of the circumference of the circumscribing circle. (5) 80x^=251.328 rd., the circumference of the circle, or the length of the fence. (6) .-. The cost is 251.328X$2=$502.656. PROBLEM 426. What is the length of each side of an octagon…
Arithmetic · Geometry
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