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A kilometer is 1,000 meters, and there are 100 centimeters in a meter.

So there are 100,000 centimeters in a kilometer.

That means one centimeter is 0.00001 kilometers.

So there are 0.000045 kilometers in 4.5 centimeters.

If you meant to ask how many centimeters in 4.5 kilometers, that's 100,000 x 4.5 = 450, 000

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14y ago

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