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27 March, 21:55

a 1000 foot spool of bare 12-gauge copper wire weighs 19.8 pounds. How much will 18 inches of the wire weigh, in ounces?

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  1. 27 March, 22:44
    0
    0.4752 oz.

    Explanation:

    Length = 1000 ft

    Converting ft to inches,

    12 in = 1 ft

    1000 ft = 1000 * 12

    = 12000 in

    0.05082 in = 0.12908 cm

    Mass = 19.8 lb

    Converting lb to oz,

    1 ounce = 0.0625 lb

    1 lb = 1/0.0625 oz

    19.8 lb = 1/0.0625 * 19.8

    = 316.8 ounce

    Since, 12000 in of copper wire weighs 316.8 ounces.

    Therefore, 1 in will weigh = 316.8/12000

    = 0.0264 oz

    18 in = 0.0264 * 18

    = 0.4752 oz.
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