Find the amount of thermal energy that flows per day through a solid oak wall 10.0 cm thick, 3.00 m long, and 2.44 m high, if the temp of the inside wall is 21.1 C while the temp of the outside wall is -6.67 C.
coefficient of thermal conductivity for the oak is 1.47 x 10^-1
The Attempt at a Solution
This is a review question in my textbook and it shows:
(0.147 J/m s C) (24.0 m squared) (21.1 C - (-6.67 C))(24 hr)(3600 s/1 hr)
I understand the problem and the application, I am just unsure of how to get the area, A, for these problems. ....how did the 24 m^2 come about?