The diameter of the wire is 3.0 mm, so the radius is $r = \frac{3.0}{2} = 1.5$ mm = 0.0015 m.
The length of the wire is 30 cm = 0.3 m.
The volume of the wire is given by the formula for the volume of a cylinder:
$V = \pi r^2 l = \pi (0.0015)^2 (0.3) = 2.12 \times
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