Inspired by Joma's favorite interview question Can you solve my favorite interview question? (math + cs), this project further visualizes the dots within the circle and those out of the circle.

This question uses random to generate number from 0 to 1 and ask the number pi.

The trick behind this question is that we have to imagine a circle with radius 1 and a square with a side length of 1.
$$\frac{\pi r^2}{(2r)^2} = \frac{\text{Number of points inside the circle}}{\text{Number of total points}}$$ Calculate the distance between each point and see if they are within the radius 1.
The 4 times of the radius between the number of point within the circle and the total number of point is pi!

For more, we can look up Monte Carlo, using abundant random number to obtain a targeted result.