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r = d/2 = 1 mm = 10⁻³ m
p = 0,17 *10⁻⁶ Ω * m
l = 100 m = 10² m
R = ?
S = πr²
S = 3,14 * (10⁻³ m )²
S = 3,14 *10⁻⁶ m²