I was about to post a few questions that I needed help on, when I found that somebody else had already posted these questions. Here's the original post: https://web2.0calc.com/questions/need-help-on-a-few-tough-geo-questions
PS : The answer on the original post is wrong. I checked it and the solution does not make sense.
PPS : Thank you very much for taking your time to help me!
