Antarctica has an area of 5,500,000 square miles. It is covered with ice, giving the continent an average elevation of 7500 feet. Without the ice, it is estimated the continent would have an average elevation of 1500 ft. The average density of the ice is 0.917 g/mL. How many tonnes of ice cover Antarctica?
1 in = 2.54 cm 1 mi = 5280 ft 1 tonne = 1000 kg
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