Pi from Uniform Distribution
Professor showed that random dart throwing can be used to estimate pi. $ \sqrt{x^2 + y^2} < 1 $ to count if in the circle or out of circle.
$ 4 * \frac{\text{number of darts in the circle}}{\text{number of darts}} = \pi $
makes sense because if r = 1, then area of square will be 2x2 = 4 and area of circle will be $\pi$.