Question 1014567
arc length = central angle degrees of the arc / 360 * 2 * pi * r


your central angle is 7 minutes which is equal to 7/60 degrees because 1 minute = 1/60 degrees, therefore 7 minutes = 7/60 degrees.


arc length is therefore (7/60) / 360 * 2 * pi * r


since r = 3960 miles, this equation becomes:


arc length = (7/60) / 360 * 2 * pi * 3960


simplify this to get arc length = 8.063421144 miles.