Question

how many significant figures are in the measurement 0.020 km?
a. 1
b. 2
c. 3
d. 4
please select the best answer from the choices provided
a
b
c
d

Explanation:

Step1: Recall significant - figure rules

Leading zeros are not significant. Trailing zeros after a non - zero digit and to the right of the decimal point are significant.

Step2: Analyze 0.020 km

The leading zeros (the two zeros before the 2) are not significant. The 2 and the trailing 0 after it are significant. So there are 2 significant figures.

Answer:

B. 2