Extended Surfaces (Fins) Adiabatic Tip

1. The problem statement, all variables and given/known data

Please see images - full problem statement given.

Summary: I have to calculate T_L for an adiabatic tip extended surface



I found all the equations for points 1-6 but cannot figure out 7.

2. Relevant equations...



Extended Surfaces (Fins) Adiabatic Tip

Extended Surfaces (Fins) Adiabatic Tip