It is 297 mm.
30mm
20 centimeters
20 centimeters
20 centimeters
20 centimeters duh lolll
20 meters
2 meters
20
2
5milimimeter
20 centimeters
10centimmeters
1 meter
9 cm
5milimimeter
20 centimeters
The number of pages it has, the number of words it contains, thickness of the book, weight of the book, time it takes to read it, etc.
10centimmeters
4inches
Earthworms vary greatly in their length.
1 meter
12mm
300 feet
About 4 millimeters
9 cm
21 feet