High-voltage power lines are a familiar sight throughout the country. the aluminum (resistivity = 2.82 x 10-8ï m) wire used for some of these lines has a cross-sectional area of 4.1 x 10-4 m2. what is the resistance of 8.2 kilometers of this wire?

The formula that relates the resistance R of a wire with the resistivity of the material of the wire is

where L is the length of the wire (in our problem, ) and A is the cross sectional area (in our problem, ).
For the aluminim wire () of the problem, the resistance is

Iwould sure like to answer your question but i honestly just don’t know