5,280*3=15,840
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3 miles=15,840 feet
There are 5280 feet in one mile, so in 3 miles there are 15840 feet.
Answer: 21000 ' = 3.97727 mi. OR 3 mi. and 1720.0 yd
There are 5280 feet in one mile. Therefore, 3 miles is equal to 3 x 5280 = 15840 feet.Answer: 3 mi. = 15,840 '
It is 15840 feet.