Answer
105 mm
Work Step by Step
10.5 cm to millimeter
Put the unit for the answer (millimeter) in the numerator of the unit fraction; put the unit you want to change (cm) in the denominator.
Unit Fraction equivalent to 1 = (10 decimeter)/(1 centimeter)
Multiply 10.5 cm times the unit fraction.
10.5 cm * (10 decimeter)/(1 centimeter) = 105 mm