<p>The resistance of a wire of 0.01 cm radius is 10<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>&#937;</mi></math>. If the resistivity of the material of the wire is&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>50</mn><mo>&#215;</mo><msup><mn>10</mn><mrow><mo>-</mo><mn>8</mn></mrow></msup><mi>&#937;</mi><mo>-</mo><mi>m</mi></math>, find the length of the wire.</p>