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jarak terdekat ^2 = (jarak A-B + jarak C-D) ^2 + (jarak B-C)^2
jarak terdekat^2 = (90+120)^2 + (280)^2
jarak terdekat^2 = 44.100 + 78.400
jarak terdekat^2 = 122.500
jarak terdekat = 350km