The way in which you need to solve this is by using the formula:
R = ρL/A
That one is the formula that demonstrates Resistance of a wire in Ω.
The formula can be explained like this:
ρ is resistivity of the material in Ω-m
L is length in meters
A is cross-sectional area in m²
A = πr², r is radius of wire in m
As soon as you have your numbers, you can replace and proceed to get the asnwer