The sn as provided does not match any in the Model 17 range.
21120
4/21120 = 0.00018939
5280 feet = 1 mile so 21120 feet = 21120/5280 = 4 miles.
There are 1760 yards in one mile. Therefore, 21120 yards is equal to 21120/1760 = 12 miles.
21120
10560 x 2 = 21120
the answer to that question is 12 miles. it took a long time for me to do this question. This was for my homework!
21120
3 feet in 1 yard yards = 21120/3 =7040
21120
0.53%
21120!