To change 97/14 into a mixed number, first figure out how many times 14 can go into 97 without going over. This would be 6 times which would be the whole number part of your mixed number. Then, multiply 6 by 14 to get 84 and subtract it from 97 to get 13 which would be the part over 16. This would result in your answer 6 13/16, would be 97/14 in mixed number form.
Given:

Required:
Length of an arc x.
Explanation:
Length of an arc is given as,

Length of an arc is calculated as,

Answer:
Thus the value of the length of an arc is 15.5091 mm