How would you write the number of significant figures present in 16,500 km?

1 Answer
Aug 29, 2016

Answer:

There are 3 significant figures.

Explanation:

There are 3 significant figures - the figures shown in red.

#color(red)(16,5)color(blue)(00)#km

The blue zeros are place holders which ensure that the size of the number stays about the same.just not as accurate.

#16,500#km cannot round to #165#km which is quite a common error for rounding to 3 significant figures.

#20,000# km would be 1 significant figure
#17,000#km would be 2 significant figures.
#16,500# km is 3 significant figures.