19mm
Neither is necessarily more precise; something could be exactly 19mm or exactly 2cm. However it can definitely be said that measuring to the nearest mm is more precise than measuring to the nearest cm. This is because a mm is smaller and so if any rounding is involved (to the nearest mm or cm) then the rounding is less of a distance and the error in absolute precision is therefore less.
Since 1cm = 10mm, then there are 2cm's in 20mm's
There are 20 millimeters in 2 centimeters.
482.6 mm Direct Conversion Formula 19 in* 25.4 mm 1 in = 482.6 mm
Hi, .75 inches (3/4 of an inch) equals about 19 mm (19.05 to be more precise). Hope this helps and good luck ;)!
2cm
Neither is necessarily more precise; something could be exactly 19mm or exactly 2cm. However it can definitely be said that measuring to the nearest mm is more precise than measuring to the nearest cm. This is because a mm is smaller and so if any rounding is involved (to the nearest mm or cm) then the rounding is less of a distance and the error in absolute precision is therefore less.
1-2cm long
19mm is more precise. 19mm = 1.9cm
20
mm is more precise than dm. 100 mm is 1 dm.
20
634 mm.
2cm + 7.2cm + 6.9cm = 16.1
5 mm ( millimeter )
2cm
20 millimeters is 2cm