How to compare the position of 2 points on the map?

There is a point on Google maps with coordinates for example 55.789765,49.165810
There is a second point with coordinates 55.793937, 49.123834

How to determine that a second point located not farther than 100 meters from the first. Well, that is if the first point is the center of a circle with a radius of 100 meters, the second point falls in the circle.
March 19th 20 at 09:18
2 answers
March 19th 20 at 09:20
A detailed answer to the question with code example
March 19th 20 at 09:22
What a circle, just calculate the distance between two points. The result to compare more than a hundred meters or not.

If you need formula, you can read here:
The specific implementation depends on the programming language.

If you just want to calculate online, then calculate the distance between two points here, the bottom item "Calculate distance between two points".

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