This interactive visualization demonstrates the Monte Carlo method for estimating the value of π. By randomly placing points within a square, the application calculates the ratio of points falling inside an inscribed circle to the total number of points, updating the π approximation in a readout panel. The React component uses D3.js for SVG rendering and state management. A button adds 100 points per click, instantly updating the counts and the elliptical estimate. The code leverages the `d3.select` API for SVG creation and `useState` for tracking point coordinates and calculations.