Final answer:
The diameter of the eukaryotic cell in micrometers would be approximately 840 µm.
Step-by-step explanation:
Most compound light microscopes have a field of vision at a low power of about 1.4 mm.
If you are looking at a eukaryotic cell that has a diameter close to 60% of the field of vision at low power, the diameter of the cell would be approximately 0.84 mm.
To convert this to micrometers, you would multiply by 1000, so the diameter of the cell in micrometers would be approximately 840 µm.