1/10 lots of 10*10mm equals 1 cm.
511 cm equals 511 centimetres.
2.5 cm equals 1 inch.
it is equivalent to 140mm
4.6 centimetres equals exactly 4.6 cm.
7.4 meters equals 740 cm.
.013 cm
10 cm
50 cm
320 cm.
30 cm
.275 meters equals 27.5 cm
47 mm equals 4.7 cm