A 0. 20-m-long metal rod has a radius of 3. 0 cm and a resistance of 2. 5 × 10−5Ω. What is the resistivity of the metal?
a) 1. 1E–8 Ω⋅m
b) 3. 5E–7 Ω⋅m
c) 1. 0E–8 Ω⋅m
d) 1. 8E–8 Ω⋅m
e) 1. 2E–7Ω⋅m