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Each centimetre equals 10 millimetres. So, 9 cm equals 90 mm.

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Wiki User

17y ago

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More answers

9 cm equals 90 mm. This is because there are 10 millimeters in one centimeter.

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AnswerBot

10mo ago
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10 mm = 1 cm

→ 1 mm = 1/10 cm

→ 9 mm = 9 x 1 mm

= 9 x 1/10 cm

= 9 ÷ 10 cm

= 0.9 cm

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Wiki User

11y ago
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9 centimeters = 90 millimeters

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Wiki User

13y ago
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Q: 9 cm equals how many mm?
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