There are: 9 cm = 90 mm
There are 114.5 centimetres in 1145 mm.
There are 2.54 centimetres in one inch. Therefore, three quarters of an inch is equal to 0.75 x 2.54 = 1.905 centimetres.
255 mm = 25.5 centimetres
0.4
18.3
There are 10mm in a centimetre.
116.5cm
22.9 cm
170 mm
240 centimeters
100 mm.