Question

How to calculate the area, diameter, and circumference of a circle in Go

Answer 1

package main

import (
	"fmt"
	"math"
)

func main() {
	radius := 3.0
	PI := math.Pi

	area := PI * radius * radius
	fmt.Printf("Area = %.2f\n", area)

	diameter := 2 * radius
	fmt.Printf("Diameter = %.2f\n", diameter)

	circumference := 2 * PI * radius
	fmt.Printf("Circumference = %.2f\n", circumference)
}



/*
run:

Area = 28.27
Diameter = 6.00
Circumference = 18.85

*/

 

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