GURPS Realm Management

[Balor Patch]

Area = X/2 sq miles (to sync what we've been doing with the table on RM pg.4.)

Steps to getting size alone:
Area = (e^(ln(10)/6))^2)^size / 2
2*Area = (e^(ln(10)/6))^2)^size
ln(2*Area) = size * ln((e^(ln(10)/6))^2))
ln(2*Area) / ln((e^(ln(10)/6))^2)) = size

or:
ln(2*Area) / 0.767528364 = size