Balls
The following table gives the weight of cast-iron, copper, brass, and lead balls from 1 to 12 inches diameter. To obtain the weight of balls larger in diameter than is given in the table, ascertain the number of cubic inches contained in the sphere by multiplying the cube of its diameter by .5236; then multiply by the weight of a cubic inch of the metal composing the ball, as follows:
For cast-iron and tin, multiply the total cubic inches, as found by the above rule, by.263, and the product will be the weight in pounds. For copper, multiply the total cubic inches by .317. For brass, multiply the total cubic inches by .282.
For lead, multiply the total cubic inches by .410.
TABLE SHOWING WEIGHT OF CAST IRON, COPPER, BRASS, AND LEAD BALLS FROM 1 TO 12 INCHES DIAMETER.
Dia. Cast Iron. Copper. Brass. Lead. Dia. Cast Iron. Copper. Brass. Lead. 1 .136 .166 .158 .214 7 46.76 57.1 54.5 73.7 1 1/2 .46 .562 .537 .727 7 1/2 57.52 70.0 67.11 90.0 2 1.09 1.3 1.25 1.7 8 69.81 85.2 81.4 110.1 2 1/2 2.13 2.60 2.50 3.35 8 1/2 83.73 102.3 100.0 132.3 3 3.68 4.5 4.3 5.8 9 99.4 121.3 115.9 156.7 3 1/2 5.84 7.14 6.82 9.23 9 1/2 116.9 143.0 136.4 184.7 4 8.72 10.7 10.2 13.8 10 136.35 166.4 159.0 215.0 4 1/2 12.42 15.25 14.5 19.6 10 1/2 157.84 193.0 184.0 250.0 5 17.04 20.8 19.9 26.9 11 181.48 221.8 211.8 286.7 5 1/2 22.68 27.74 26.47 36.0 11 1/2 207.37 253.5 242.0 327.7 6 29.45 35.9 34.3 46.4 12 235.62 288.1 275.0 372.3 6 1/2 37.44 45.76 43.67 59.13