There are: 460 mm = 46 cm
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To change cm to mm, simply multiply by 10. 46*10=460 mm
1.0 cm = 10mm Therefore, 4.6cm = 46 mm.
1 cm = 10 mm so 1.43 cm = 14.3 mm
2.4 cm = 24 mm 1 cm - 10 mm
1 cm = 10 mm 2 cm = 20 mm . . . 9 cm = 90 mm 10 cm = 100 mm 20 cm = 200 mm 30 cm = 300 mm