TABLE III. ROODS AND PERCHES IN DECIMAL PARTS OF AN ACRE. One Acre 4 Roods 160 Perches=4,840 Square Yards=43,560 Square Feet DECIMALS OF AN ACRE IN ONE CHAIN LENGTH OF 100 FEET 42 .018939 .037879 .075757 .113636 12345678 5% .208333 62 227273 .246212 .265151 .284091 123450 IT .303030 16. 82 • 321970 17 92 .359848 19 5 6 7 8 9 ΙΟ II In. 16 3 5. .0000.0833.1667.2500.3333.4167.5000.5833.6667.7500.8333 .9167 .0052.0855.1719.2552.3385.4219.5052.5885.6719.7552.8385.9219 16. .0104.0938.1771.2604.3438.4271.5104.5938.6771.7604.8438.9271 16.0156.0990.1823.2656.3490.4323.5156.5990.6823.7656.8490.9323 16 .0208.1042.1875.2708.3542.4375.5208.6042.6875.7708.8542.9375 16.0260.1094.1927.2760.3594.4427.5260.6094.6927.7760.8594.9427 18 .0313.1146.1979.2813.3646.4479.5313.6146.6979.7813.8646.9479 16.0365.1198.2031.2865.3698.4531.5365.6198.7031.7865.8698.953 16. 0417.1250.2083.2917.3750.4583.5417.6250.7083.7917.8750.9583 16.0469.1302.2135.2969.3802.4635.5469.6302.7135.7969.8802.9635 16 0521.1354.2188.3021.3854.4688.5521.6354.7188.8021.8854.9688 .0573.1406.2240.3073.3906.4740.5573.6406.7240.8073.8906 .9740 .0625.1458 .2292.3125.3958.4792.5625.6458.7292 .8125.8958.9792 0677.1510.2344.3177.4010.4844.5677.6510.7344.8177.9010.984 t 11 16 29.1563.2396.3229.4063.4896.5729.6563.7396 8229.9063.9896 9 13 16 TABLE IX. RADII AND THEIR LOGARITHMS, MIDDLE ORDINATES, AND DEFLECTION DISTANCES. NOTE. This table applies to chords of 100-feet units. To use it for chords of 20-metre units, divide the degree of the proposed metric curve by 2 and find the quotient in the first column of the table; or multiply any tabular degree of curve by 2 for the degree of the proposed metric curve. Then onetenth of the radius opposite the tabular degree thus found or assumed will give very nearly the true radius in metres of the proposed metric curve, and four-tenths of the corresponding figures in the last three columns will give very nearly the values of those functions in metric measure. Thus, if a 3° metric curve be proposed, we take one-tenth of the radius opposite the tabular degree 1° 30', or 382 metres, and find the values of the functions in the last three columns to be .1308, 1.048, and .524. Resulting errors may be neglected except in work of extraordinary accuracy. |