find the surface area of a regular polygon circumscribed around a pyramid in go

main.go
package main

import (
    "fmt"
    "math"
)

func main() {
    // Number of sides of the regular polygon
    n := 6
    
    // Length of each side of the polygon
    a := 5.0
    
    // Height of the pyramid
    h := 10.0
    
    // Apothem of the polygon
    apothem := a / (2 * math.Tan(math.Pi/float64(n)))
    
    // Circumradius of the polygon
    circumradius := a / (2 * math.Sin(math.Pi/float64(n)))
    
    // Area of the regular polygon base
    polygonArea := 0.5 * float64(n) * a * apothem
    
    // Area of each triangular face of the pyramid
    faceArea := 0.5 * a * h
    
    // Surface area of the pyramid
    surfaceArea := polygonArea + (float64(n) * faceArea)
    
    fmt.Println("Surface area of the pyramid:", surfaceArea)
}
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