Distance between Antananarivo, Madagascar and Porto Alegre, Brazil
9780 km = 6077 miles
We assume a spherical Earth as a close approximation of the true shape of the Earth (an oblate spheroid). The distance is calculated as great-circle or orthodromic distance between city centres on the surface of a sphere.
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Antananarivo, Madagascar
Country: MadagascarAntananarivo’s coordinates: 18°54′49″ S, 47°32′10″ E
Population: 1,391,433
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Wikipedia article: Antananarivo
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Porto Alegre, Brazil
Country: BrazilPorto Alegre’s coordinates: 30°01′59″ S, 51°13′47″ W
Population: 1,372,741
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Wikipedia article: Porto Alegre
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