Convert the Following Measurements $45 \mathrm{~cm}$ To Millimeters
A) $0.045 \mathrm{~mm}$ B) $45,000 \mathrm{~mm}$

Convert the following measurements.
- $45 \mathrm{~cm}$ to millimeters

A) $0.045 \mathrm{~mm}$
B) $45,000 \mathrm{~mm}$
C) $450 \mathrm{~mm}$
D) $0.000045 \mathrm{~mm}$