Derive the conversion factor between r cmsdotomegaft and r

Question

Derive the conversion factor between r (CM⋅Ω/ft) and r (Ω⋅cm) by

a. Solving for ρ for the wire of Figure in CM⋅ Ω/ft.

b. Solving for ρ for the same wire of Figure in Ω⋅cm by making the necessary conversions.

c. Use the equation ρ₂ kρ₁ to determine the conversion factor k if ρ₁ is the solution of part (a) and ρ₂ the solution of part (b).