Find the latitude of a city that is 1265 mi from the equator?

Question

assume the earth to be a sphere with a radius of 3960 mi. the distance from pole to pole is about 27mi less then the diameter at the equator

Answer 1

Assumption: grid assumes that earth is a celestial sphere.

Therefore distance from pole to pole is irrelevant and radius of the celestial sphere is 3960 mi

90 degrees x 1265/3960= 28 degrees 45 minutes

Answer 2

18° 20' 00" N

1265/69 = 18.333.  Those are normal latitude numbers with each latitude equal to 69 miles.