1 square mile = 2.5899881 square kilometres.
So, 163,707 square miles = 424,232.28 square kilometres
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The Peloponnese region in Greece covers an area of around 21,549 square kilometers (8,320 square miles).
The Philippines is much smaller than the US in terms of land area. The Philippines is about 1/30th the size of the US. The US is approximately 9.8 million square kilometers, while the Philippines is about 300,000 square kilometers.
Krakatoa is a volcanic island located in Indonesia. It covers an area of approximately 13 square kilometers (5 square miles).
The Earth's diameter is about 12,742 kilometers (7,918 miles) and its circumference is approximately 40,075 kilometers (24,901 miles).
New South Wales (NSW) is the largest state in Australia in terms of area, covering around 809,444 square kilometers. It is home to major cities like Sydney and Newcastle, as well as vast rural and wilderness areas.