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0.4
cm ×10=mm 90
255 mm = 25.5 centimetres
There are: 9 cm = 90 mm
18.3
22.9 cm
100 mm.
170 mm
divide by 10
10 mm = 1 cm69 mm = 6.9 cm
0.05 mm = 0.005 centimetres
.1 cm/mm
There are 18 cm in 180 mm