To convert cm to mm times by ten. So this would be =1 x 10 =10mm
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62mm
Each centimetre equals 10 millimetres. So, 9 cm equals 90 mm.
1 cm = 10 mm 2 cm = 20 mm . . 10 cm = 100 mm . . 15 cm = 150 mm
1 cm equals 10 mm there for 254 cm equal 2,540 mm
1 cm = 10 mm Add a zero to the centimetre figure eg 210cm = 2100mm or 25 cm = 250mm