given that one inch is equal to 2.54 cm, convert 5 km to feet. Round to the three significant digits
1km = 3280.84 feet
So 5 feet = 16404.2
The original (16404.2) had 6 significant figures and a least significant decimal of -1.
The new format (16400) has 3 significant figures and a least significant decimal of 2.
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