40 dm
2.5 cm is more precise.
decimeters * * * * * Actually, 238 cm = 23.8 dm so 238 cm is more precise.
19.2cm is more precise
82 mm is more precise because you are missing 0.2 for 8 cm. If you want your number in cm then 8.2 cm is just as precise as 82 mm.
19mm is more precise. 19mm = 1.9cm
No.
19 mm is more precise than 2 cm because it is a smaller unit of measurement. There are 10 mm in 1 cm, so 19 mm is more specific than 2 cm.
2cm
400 mm = 40 cm
12 mm is the most precise.
634 mm.
183cm Slightly more precise, 182.88cm.