In expressing a length 810472 km as nearly as possible with three significant digits , find the percentage error  Options.
A) 0.34%
B) 0.034%
C) 0.0034%
D) 0.00034%
E) 3.4%
Error = (81.5 – 81.472)km = 0.028.   Required percentage = [(0.028/81.472)*100]% = 0.034%.   Answer is 0.034%.
<result>B</result>
In expressing a length 810472 km as nearly as possible with three significant digits , find the percentage error