You would just need to know the altitude of the plane, add to it the earth’s radius (approx 4,000 mi), then use the sum as “r” in the formula for a circumference: 2pi x r = C
27 posted on 08/12/2017 8:07:54 PM PDT by ETL
(Obama-Hillary--REAL Russia-US collusion! (UraniumOne Deal, Missile Defense, Nukes) See my home page)
