Pocket reference book presented by John Paul (1885)
The Northwestern Lumberman Print · The Northwestern Lumberman Print · leaf 47
Ex-ample : In Fig. 3 the oppositesides A D and B C are nearlyparallel as also the sides A B andCD, A 25=120, B C=100, A B=4l\ CD=55. Then the area ofthe figure is expressed as fol- ^lows: area=(120+100)-^2X(40+55-^2=5225. If the measure was taken in rods, 5225-^160=32%nearly, thenumber of acres in… … Useful Information. is of more irregular shape, the method indicated in Fig. 4 should beadopted, i. e.: divide the whole piece into triangles and obtain the areaof each as directed. This will apply to fields of* any number of -sides. NAILS. Nails are put up 100 pounds to the keg. SIZES.…
Architecture, Domestic · Designs and plans
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