Answer:
Two significant number are in the measurement 0.020 km
Step-by-step explanation:
Given value is 0.020 km.
Significant figure :
Significant figures of a number are numbers that have significance to contribute to its resolution of measurements. This involves all numbers except the following: all leading zeros.
So, the significant number in this number is 2 and 0.
Hence, Two significant number are in the measurement 0.020 km