find the area of a regular polygon circumscribed around a circle in go

main.go
Area = (n * s^2) / (4 * tan(pi/n))
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main.go
package main

import (
	"fmt"
	"math"
)

func main() {
	// Define the radius of the circle and the number of sides of the polygon
	radius := 5.0
	numSides := 6

	// Calculate the length of each side using trigonometry
	sideLength := 2 * radius * math.Sin(math.Pi/float64(numSides))

	// Calculate the area of the polygon using the formula
	area := (float64(numSides) * math.Pow(sideLength, 2)) / (4 * math.Tan(math.Pi/float64(numSides)))

	// Print the result
	fmt.Printf("The area of the regular polygon with %d sides circumscribed around a circle with radius %.2f is %.2f.\n", numSides, radius, area)
}
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main.go
The area of the regular polygon with 6 sides circumscribed around a circle with radius 5.00 is 64.95.
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