#### Question

a.

(r₂-r₁)/2πkr₁r₂

b.

(r₂-r₁)/3πkr₁r₂

c.

(r₂-r₁)/πkr₁r₂

d.

(r₂-r₁)/4πkr₁r₂

Posted under Steady State Conduction Heat Transfer

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