To convert from meters to millimeters, we can multiply the measurement by 1,000 since there are 1,000 millimeters in a meter.

For the width, 1.25×10^−8 meters, we multiply by 1,000 to convert to millimeters:

1.25×10^−8 × 1,000 = 1.25×10^−5 millimeters

For the length, 2.5×10^−6 meters, we multiply by 1,000 to convert to millimeters:

2.5×10^−6 × 1,000 = 2.5×10^−3 millimeters

Therefore, the dimensions in millimeters are 1.25×10^−5 by 2.5×10^−3 millimeters.

*The answer above was posted in response to the following question.*

1.25×10^−11 by 2.5×10^−9 millimeters

1.25×10^−10 by 2.5×10^−8 millimeters

1.25×10^−5 by 2.5×10^−3 millimeters

1.25×10^−6 by 2.5×10^−4 millimeters