20 Relatively Closest Non-Bordering Country Pairs by Geographical Center
Can you find the 20 pairs of non-bordering countries that are relatively closest together? Distance is measured between their geographical centers and is then divided by the sum of R1 and R2 which are the radii of circles having the same area as the two countries
Data from Portland State University (https://www.pdx.edu/econ/country-geography-data), for missing countries from CIA (https://www.cia.gov/library/publications/the-world-factbook/fields/2011.html)
Country A comes before Country B in alphabetical order