1 cm = 10 mm
2 cm = 20 mm
3 cm = 30 mm
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9 cm = 90 mm
That's more than 77 mm.
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77 cm = 770 mm
14 mm is longer than 1 cm because there are only 10 mm in 1 cm.
1 cm = 10 mm 30 cm = (30 x 10) = 300 mm 484 is a greater number than 300, so 484 mm is longer than 300 mm, and is therefore more than 30 cm also, too, as well.
35 mm. it equals 3.5 cm which is longer than 3 cm
3.5 cm is 5 times as long as 7 mm, and 4 times longer than 7 mm.