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**andres** I have a difficulties calculating "mils". The question says that a mil is the measurement of an arc that is equal to $\displaystyle 1/6400 $ of a circle.

Now, it's asking me to calculate the measurement in radians of an angle that measures 1 mil.

To my understanding, a circle is equal to $\displaystyle 2{\pi} $ so I calculated: $\displaystyle \frac{2\pi}{6400} $ which game 0.000981747703...

But it says that I need to round the answer to 2 decimals, which wouldn't make much sense. Am I calculating this correctly? Thank you