Heat Transfer Question.

Please answer it in clear hand writing or any suitable method. thank you.

A rectangle steel block 0.55m (length) by 0.75m (height) by 0.60m (width) is initially at 400 C in the oven. After the heating process, the block is placed to the recondition-room with temperature of 101C. Assume heat transfer to all dimensions of the steel block, determine the temperature at the center of the block after 2 hour. The properties are; surface convection coefficient is 40W/m2.K,k=30W/m.K and =0.0399m2/h