1. The problem statement, all variables and given/known data Suppose that you wish to fabricate a uniform wire out of 1.00 g of copper. Assume the wire has a resistance R = 0.600 , and all of the copper is used. What will be the diameter of the wire? 2. Relevant equations A = V/l R = sqrt(A/pi) 3. The attempt at a solution For the volume I have gotten 1.12e-7 ( (1*10e-3)/8.92e3)=8.92e3 is the density of copper and it's 1 g of copper. and for the length, I have gotten 1.988. For the diameter.. I divided the volume/length to get the area = 1.12e-7/1.988 = 5.63e-8 Then I used the formula r = sqrt(A/pi) = sqrt(5.63e-8/pi) = 1.34e-4 so diameter = 2 *r = 1.34e-4*2 = 2.68e-4, but I keep getting it wrong! Can someone explain what I'm doing wrong??