Hello, please answer and explain :

You decide that it would be just as interesting to measure resistance versus length to find the resistivity value (?) of aluminum and brass. The wires are cylindrical and you measure the diameter of the aluminum wire at ?Al = (1.05 0.05) mm and the brass wire at ?La = (1.25 0.05) mm. You cut different length segments of each wire and measure their resistances.

Table 2 - Resistance values for aluminum and brass wire at different lengths