If you convert all the measurements to the same unit you have: 2.5 cm, 20.1 cm, 19.2 cm, 20.3 cm; OR 25 mm, 201 mm, 192 mm, 203 mm From these you can then clearly see that the longest measurement is then 20.3 cm (which is 203 mm if converted).
For unit of length and mass and conversion ,the relations are given .By the conversion table the realtion between mm and cm is given below. 1 cm=10 mm. So,1 mm=0.1 cm. hence ,11.2 cm=112 mm. Thus,11.2 cm (112 mm ) > 11.2 mm.
Millimeters are smaller so if a measurement is given in mm it is likely to be more accurate than a measurement given in cm. However, it's important to note that neither mm nor cm is inherently more accurate.
To determine this, it's best to first convert the lengths to the same unit, either 3.4 cm, 3.0 cm; OR 34 mm, 30 mm You can then clearly see that 3.4 cm (which is 34 mm) is the longer of the two measurements, i.e. 3.4 cm > 30 mm
3.6 mm 3.6 m = 3.6 x 100 cm = 3.6 x 100 x 10 mm which is 3600 mm 3.6 cm = 3.6 x 10 mm which is 36 mm 0.36 m = 0.36 x 100 cm = 0.36 x 100 x 10 mm = 360 mm Hence from smallest to largest are: 3.8 mm, 3.6 cm, 0.36 m, and 3.6 m
By unit of length and mass and conversion ,we can say that converting all the quantities into mm 1 m=1000 mm 7 m=7000 mm 1 dm=100 mm 690 dm=69000 mm 1 cm=10 mm 680 cm=6800 mm now,on comparing we get : 690 dm>7100 mm >680 cm>7m
10 mm in 1 cm, therefore, 8 mm = 0.8 cm That answer would be true if the question was how many millimetres in a centimetre. But millilitres are a measure of volume and cannot be related to a measurement of length.