1 centimetre = 10 millimetres so 31 centimetres = 31*10 = 310 millimetres. Simple!
There are 31 millimeters in 3.1 centimeters. 3.1 centimeters x 10 millimeters/1 centimeter = 31 millimeters 1 centimeter = 10 millimeters
1.6 centimeters=16 millimeters
50 millimeters is 5 centimeters.
0.5 centimeters is 5 millimeters.
1,190 millimeters is 119 centimeters.
10 millimeters = 1 centimeter 200 millimeters = 20 centimeters 240 millimeters = 24 centimeters
800 millimeters
60 millimeters is 6 centimeters.
310 mm = 31 centimeters
487 centimeters is 4,870 millimeters.
1 millimeter=0.1 centimeters