If you are in a science lab that uses a microscope with the magnifying power of 10, then the image of a 3 mm insect would be:

*
1 point
.3 milimeters
30 milimeters
10 milimeters
.5 milimeters

The image of a 3 mm insect would be 30 millimeters under a microscope with a magnifying power of 10.