What is wrong with this road sign:
Memphis 7 mi (11.263 km)?
The problems with the road sign is:It is not correct to express the term with its significant figures as mentioned in the sign.
The metric system of length is expressed with 3 significant figures which is wrong.
(In addition 7miles = 11.27 km)
The correct sign should be
BOSTON 7mi (11km)
2) Also the precision of the two measurements are...