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How to convert 9cm to3mm​

User Synesso
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1 Answer

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Explanation:

1 cm = 10 mm

therefore,

9 cm = 9×1 cm = 9×10 mm = 90 mm.

we need to multiply 90 mm by what factor to get 3 mm ?

90 × f = 3

f = 3/90 = 1/30

so, we convert 9 cm to 3 mm by multiplying 9 cm by 1/30 (or by dividing 9 cm by 30).

User Rashack
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