find the area of a circle in go

To find the area of a circle in Go, we can use the math package and write a function that takes the radius of the circle as input and returns the area. Here's an example code snippet:

main.go
package main

import (
    "fmt"
    "math"
)

func circleArea(radius float64) float64 {
    return math.Pi * math.Pow(radius, 2)
}

func main() {
    radius := 5.0
    area := circleArea(radius)
    fmt.Printf("The area of the circle with radius %v is %v.", radius, area)
}
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In this code, we define a function circleArea that takes a float64 parameter radius and returns the area of the circle, which is calculated using the formula pi * r^2. We then call this function in the main function and pass in a value for the radius. Finally, we print the result using fmt.Printf.