about 500 million to 1 billion
20
20mm
60 mm = 6 cm
10
340mm
3.8cm
1 cm = 10 mm therefore the shelf is 450mm 450mm/9mm = 50 books
1 mm = 1000 um
1 inch is how many mm?
There are 200 micrometers in 2 mm. Therefore, 20 yeast cells (200/10) could fit across a 2 mm field.
1 mm = .1 cm