An educated guess about something. (What might happen in the future)
I think is:
(4)Inner core
(4)different Kingdome different species
hope this help :)
The definition of a scale of 1: 166 will mean that the scale of 1 in the model will be equivalent to 166 times the measurement in the real model, therefore we will have that the height would be 166 times smaller than the 179m given:

The same for the diameter,

The volume of a cylinder is given as




Therefore the volume would be 
Do you have a picture then I could determine 1 millimeter