Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn & company · leaf 197
rea of a triangular field whose sides arerespectively 20, 30, and 40 chains. 3. Required the area of a triangular field whose base is12.60 chains, and altitude 6.40 chains. 4. Required the area of a triangular field which has two sides4.50 and 3.70 chains, respectively, and the included angle 60°.… … 6. Required the area of the field ABCDEF (Fig. 19), ifAE= 9.25 chains, FF= 6.40 chains, PP= 13.75 chains, ED= 7 chains, EB = 10 chains, CC =4 chains, and J.J.=4.75 chains. 7. Required the area of the fieldABCEEF (Fig. 20), ifAF= 4 chains, FF= 6 chains,EE = 6.50 chains, AP = 9 chains,AE = 14 chains,…
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