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There are 10 millimetres in one centimetre. Therefore, 21 centimetres is equal to 21 x 10 = 210 millimetres.

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14y ago
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14y ago

There are 10 millimetres in one centimetre. Therefore, 2.1 centimetres is equal to 2.1 x 10 = 21 millimetres.

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Q: How many millimetres are there in 21 centimeters?
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Related questions

How many centimeters are there in 21 millimeters?

There are 10 millimetres in one centimetre. Therefore, 21 millimetres is equal to 21/10 = 2.1 centimetres.


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