A steam pipe is wrapped with insulation of inner and outer radii, r i and r o

Question:

A steam pipe is wrapped with insulation of inner and outer radii, r_i and r_o, respectively. At a particular instant the temperature distribution in the insulation is known to be of the form

(E) +c + C2 T(r) = C, In

Are conditions steady-state or transient? How do the heat flux and heat rate vary with radius?

Distribution
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