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There are 10mm in a cm. Therefore to convert cm to mm, you need to multiply by 10. 9.9*10=99mm.

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Q: What is nine point nine centimetres convirted into millimetres?
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How do you find 9.3 on a ruler?

Use the "Tenths" scale of inches, or the centimetres and millimetres scale.


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One centimetre is equal to 10 millimetres. Therefore, 29 centimetres is equal to 29 x 10 = 290 millimetres.


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There are 2.54 centimetres in one inch. Therefore, rounded to two decimal places, 9 centimetres is equal to 9/2.54 = 3.54 inches.


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nine inches is 228.6 millimetres.


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There are: 90 mm in 9 cm


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There are 2.54 centimetres in one inch. Therefore, nine tenths of an inch is equal to 9/10 x 2.54 = 2.286 centimetres.


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