Looking through a microscope the field of vision is 2 millimeters across. How many 2 micrometer cells could fit end to end across the 2mm field? I know there is a ratio formula that I just need to plug the numbers in, but I can't remember how.

## In a field of vision 2mm across, how many 2 micrometer cells could fit end to end?

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# 1 Answer

1 millimeter = 1/1000 of a meter

1 micrometer = 1/1000000 of a meter

Thus, 1 micrometer = 1/1000 of a millimeter