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Best Answer

1 miles = 1.609344 kilometres

45 miles = 72.42048 kilometres

The formula to convert miles to km

45 mi*

63360 in

1 mi

*

2.54 cm

1 in

*

1 km

100000 cm

=

72.42048 km

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11y ago
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Q: What is 45 miles per hour into kilometers per hour?
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