The answer depends on how long the piece is!
It is 57.5 mm.
12 cm
4.45cm to the nearest cm = 4cm
3.5 rounded to the nearest cm is 4cm
It is 10 cm.
Musical instrument strings: 4/4 Violin 32.7 to 33.0 cm Double bass 105.0 to 110.0 cm
It is exactly equal to the length of string you have measured in centimeters.
Musical instrument strings: 4/4 Violin 32.7 to 33.0 cm Double bass 105.0 to 110.0 cm
It is 57.5 mm.
The length is accurate to the nearest 10 micrometres.The length is accurate to the nearest 10 micrometres.The length is accurate to the nearest 10 micrometres.The length is accurate to the nearest 10 micrometres.
42 cm
1 cm is the nearest 0.015
There no information in the question to even hazard a guess. The length of a string (line) could be any measurement.
139mm rounded to the nearest centimetre is 14cm - and rounded to the nearest decimetre would be 1dm.
4.78 m to the nearest m is 5 m.
12.49 cm
70 CM