Please determine the length L2, of aluminum wire (having resistivity = 2.82 x 10^-8 ohm m) at the reference temperature (To = 20 C), that consists of the same resistance as a silver wire (having resistivity = 1.59 x 10^-8 ohm m, temperature coefficient of resistivity = 3.8 x 10 ^ -3 C^-1) of length L1 = 10m at T = 800 C. The cross sectional area of both wires is A.