find the surface area of a regular polygon inscribed in a cone in rust

main.rs
// Cone properties
let r = 5.0; // Radius of the cone
let h = 10.0; // Height of the cone

// Polygon properties
let n = 6; // Number of sides
let s = 2.0 * r * (std::f64::consts::PI / n as f64).sin(); // Side length of the polygon

// Slant height of the cone
let l = (r.powi(2) + h.powi(2)).sqrt();

// Base area of the polygon
let b = (n as f64 * s.powi(2)) / (4.0 * (std::f64::consts::PI / n as f64).tan());

// Lateral area of the cone
let a = std::f64::consts::PI * r * l;

// Surface area of the polygon inscribed in the cone
let sa = a + b;

println!("Surface area of the polygon inscribed in the cone: {}", sa);
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