Heavy rainstorm dumps- how many gallons of water was this

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A Heavy rainstorm dumps 1.0 cm of rain on a city five km wide and 8 km long in a two hr period. How many metric tons (1metric ton = 10^3 kg) of water fell on the city?  [1cm^3 of water has a mass of 1 gram=10^-3.] How many gallons of water was this?

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