# 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
Quiz by scambigol
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Last updated: December 2, 2015
 First submitted December 2, 2015 Times taken 35 Report this quiz Report
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 D / (R1 + R2) Country A Country B 0.75 Bahrain Saudi Arabia 0.81 Thailand Vietnam 0.85 Brunei Indonesia 0.87 Cyprus Turkey 0.87 Iran Saudi Arabia 0.93 Iran Kuwait 0.93 Benin Ghana 0.97 Croatia Italy 0.98 Bangladesh China 0.98 Kazakhstan Tajikistan 1.01 Gambia Guinea-Bissau 1.04 Kyrgyzstan Russia 1.05 Lebanon Turkey 1.08 Egypt Saudi Arabia 1.08 Trinidad and Tobago Venezuela 1.10 Eritrea Saudi Arabia 1.10 Iran Qatar 1.11 Bahrain Iran 1.11 Bosnia and Herzegovina Italy 1.11 Austria Croatia
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Level 84
Dec 2, 2015
I understand how these are calculated, but they are still a very strange collection.
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Level 73
Dec 3, 2015
True, they're mostly kind of countries 'somewhat englobed' by another yet not bordering
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Level 48
Dec 3, 2015
Its really, really hard to believe that these are correct. So big countries.
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Level 73
Dec 4, 2015
Thats because this quiz considers "relative" distance. If you reduce all sizes for example by 50%, the value stays the same