what is the number of significant figures in 6400 km? And state the rule used for determining the same.
Please find below the solution to the asked query:
The number of significant figures in 6400 is 2
Rules for counting significant figures are:
All zeroes between non zero numbers are significant
All non zero digits are significant
Zeros within a number are always significant. Both 4308 and 40.05 contain four significant figures.
Zeros that do nothing but set the decimal point are not significant. Thus, 470,000 has two significant figures.
Trailing zeros that aren't needed to hold the decimal point are significant. For example, 4.00 has three significant figures.
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