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4. @Astargath no you didn't explain it, you posted memes and are unable to articulate your argument. You're asking the reader to believe the Earth is a globe based on unspecified equations and can't produce them for analysis. That's some nice fucking strategy to keep me from debunking the claims you copy&pasted. I can prove mathematically that adding more wells (or sticks) to Eratosthenes (was he even a real person?) experiment doesn't change the results, I can add any number of wells and the results are the same for a globe or a plane.
But all formulas and even a method that you or anyone can do are found here:
https://takethisskepticalblog.wordpress.com/2015/10/21/how-to-disprove-the-flat-earth/:^) welcome to reality.
That blog post debunks a strawman flat Earth model; Eratosthenes works for both a globe and a plane, it proves neither.