There are one million square metres in each square kilometre. In order to answer the question, multiply each figure below by one million.
According to the Australian Government's Geoscience website, the mainland area of Australia is 7 659 861 sq km, and the total land area (including 32 163 sq km for the islands) of Australia is 7 692 024 sq km. If you add the marine area of Australia (410 977 sq km), the total surface area of the continent, including its immediate islands and their waters, is 8 103 001 sq km. This figure excludes all the offshore territories of Australia.
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