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depends upon the thickness. I have heard of 1 mil diameter wire. Using this: density of Pt is 21.45  g/cm3 1g has a volume of 0.0466 cm3 volume is cross sectional area x length 1 mil is 0.00254 cm, radius is 0.00127, area is 5.067E-6 divide volume by cross sectional area to get length, L = 9,197 cm or 92 meters

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17y ago

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