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first, simplify the question : 2.5 x 100 km = 250 km then, change the prefix name ( k, kilo) to multiplier : 250 km = 250 x 103 m ( 1 kilo = 1000 meters = 1 x 103 m) 250 x 103 m = 2.5 x 105 m next, divide kilo with milli : (2.5 x 105 m) / (1 x 10-3 m) ( 1 milli = 0.001 m = 1 x 10-3 m) thus, the answer is : 250,000,000 mm = 2.5 x 108 m THE ANSWER IS 2.5 x 108 m

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16y ago

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