Milliliters is a measure of volume, whereas centimeter is a measure of distance. They are not compatible for conversion.
1 milliliter = 1 cubic cm (or 1 cc) 1 millimeter = 1/10 centimeter
These are not equivalent. A milliliter is a measurment of volume while a centimeter is a measurement of length. You can not convert from one to the other.
29 centimeters=290 millimeters