No.
19.2cm is more precise
12 mm is the most precise.
(24 cm)² = 576 sq cm, the area of a square with sides 24 cm 24 cm² = an area of 24 sq cm
These numbers are precise, as they are all close together. If any one of these are accurate, then this group of numbers can be considered precise and accurate.
No.
2.5 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
238 centimeters = 93.7007874 inches
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.
12 mm is the most precise.
2.38 meters1 meter = 100 centimeters238 cm = 238 cm * 1 meter/100 cm = 2.38 meters
2cm
40 dm
634 mm.