please help The thermal contact conductance at the interface

please help

The thermal contact conductance at the interface of two aluminium plates is measured to be 11,000 W.m^-2. K^-1. Determine the equivalent of aluminium plate that has the same thermal resistance as that exhibited by the interface between the plates. The thermal conductivity of aluminium is 237 W.m^-1. K^-1.

Solution

given that thermal resistance of aluminium plates R= 11,000W/m2k

thermal conductivity of aluminimum K = 237W/mk

thickness x =K/R

= 237/11000

= 0.021545m

=2.15cm