45 millimeters thick and 0.045 meters thick
so when multiplying by tens, we just move the decimal forward or back. In this case, we move it forward. This is because it is 10 to the negative power. We move it forward two spaces because it's to the negative power squared. Since it asks us to use a more appropriate measurement, we use KHDBDCM. B being our base(meter), and m is millimeter. We move the decimal back 3 spaces, making it 45 millimeters.