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GO Program to find area and circumference of circle

This simple GO language program is Calculating the area and circumference of the circle. This is an example how we use float64 and constant declaration.

Example

package main

import "fmt"

func main(){
    var rad float64
    const PI float64 = 3.14 // Constant
    var area float64
    var ci float64
    fmt.Print("Enter radius of Circle : ")
    fmt.Scanln(&rad)
    area = PI * rad * rad 
    fmt.Println("Area of Circle is : ",area)
    ci = 2 * PI * rad
    fmt.Println("Circumference of Circle is : ",ci)     
}
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