Question

Among the following length which one is the smallest

A 0.003km
B 200mm
C. 4m
D 50cm​

Answer 1

200mm is smallest

Explanation:

km-m-cm-mm(order of units)

Answer 2

B 200mm.

Explanation:

B 200mm = 200 x 1/1000m = 2/10m = 0.2m