TO MEASURE THE RESISTIVITY OF THE MATERIAL OF A WIRE

In an experiment to find a value for the resistivity of manganin wire the following values were obtained:
length of wire: 485 mm
diameter of wire: 0.52 mm, 0.52 mm, 0.51 mm, 0.51 mm.

resistance of that length of wire: 1.1

Use all of these values to obtain a value for the resistivity of manganin wire.

SOLUTION

(Note: the true value is which gives a percentage error of 4.9%)