Question

The total land area on earth is about 6×10 to the seventh power square miles. The layered of Australia is about 3×10 to the six power square miles. About how many times larger is the land on earth than land of Australia

Answer 1

The is earth is 20 times larger than the land of Australia. 6 times 10^7 is 60,000,000 and 3 times 10^6 is 3,000,000 and when you divide that you get 20.