Hello all. My question combines two things I'm rusty at: Excel and geometry. I have a 2D 'map' with various locations on a coordinate grid. I am trying to find a formula that would determine whether location A is within radius X of location B.

Another user asked a different but related question a few years ago ["Formula(s) to find locations that are within radius of each other"], but in regards to locations on a sphere (i.e. the Earth). While the suggested answer looks relevant to that use case, I'm guessing that it would not directly apply to my own 2D scenario.

Thanks in advance for any thoughts.