find the surface area of a regular polygon circumscribed around a cone in swift

main.swift
// Define the number of sides of the regular polygon and the radius of the circumscribed circle
let n = 6 // change this to the number of sides you want
let r = 5.0 // change this to the radius of the circle you want

// Find the slant height of the cone
let slantHeight = sqrt(pow(r, 2) + pow((r * cos(Double.pi / Double(n))), 2))

// Find the height of the cone
let height = slantHeight - r

// Find the radius of the base of the cone
let baseRadius = r * sin(Double.pi / Double(n))

// Find the perimeter and apothem of the regular polygon
let perimeter = 2 * n * baseRadius
let apothem = baseRadius * cos(Double.pi / Double(n))

// Find the surface area of the regular polygon
let surfaceArea = perimeter * slantHeight + (n * baseRadius * apothem)
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