This question cannot be answered sensibly. A square kilometre is a measure of area, with dimensions [L2]. A kilometre is a measure of distance, with dimensions [L]. The two measure different things and basic dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
About 10,200,000 square kilometres
Three square kilometres.
24,675 square kilometres or 9,527 square miles.24,675 square kilometres or 9,527 square miles.24,675 square kilometres or 9,527 square miles.24,675 square kilometres or 9,527 square miles.24,675 square kilometres or 9,527 square miles.24,675 square kilometres or 9,527 square miles.24,675 square kilometres or 9,527 square miles.24,675 square kilometres or 9,527 square miles.24,675 square kilometres or 9,527 square miles.24,675 square kilometres or 9,527 square miles.24,675 square kilometres or 9,527 square miles.
About 19,800 square kilometres or 7,644 square miles.About 19,800 square kilometres or 7,644 square miles.About 19,800 square kilometres or 7,644 square miles.About 19,800 square kilometres or 7,644 square miles.About 19,800 square kilometres or 7,644 square miles.About 19,800 square kilometres or 7,644 square miles.About 19,800 square kilometres or 7,644 square miles.About 19,800 square kilometres or 7,644 square miles.About 19,800 square kilometres or 7,644 square miles.About 19,800 square kilometres or 7,644 square miles.About 19,800 square kilometres or 7,644 square miles.
649950 square kilometres.
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740 square kilometres.
2358 square kilometres
2.59 km2
93,000 square kilometres.
27,750
270,534 square kilometres.