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Go Examples
Go Program to Find Area of a Circle
Area of a Circle Formula
Area of a Circle = π * (radius*radius)
Go Program to find area of circle
This Go program gets radius as user inputs and computes the area of a circle.
package main
import (
"fmt"
"math"
)
func main() {
var radius int
var area float32
fmt.Println("Finds area of circle")
fmt.Println("--------------------")
fmt.Print("Enter radius: ")
fmt.Scanf("%d", &radius)
area = math.Pi * (float32(radius) * float32(radius))
fmt.Printf("Circle Area: %.2f\n", area)
}
Output:
$ go build area-of-circle.go $ ./area-of-circle Finds area of circle -------------------- Enter radius: 5 Circle Area: 78.54
Go Programming Area of Semi-circle formula
Area of Semi-circle = ( π * radius*radius)/2
Go Program to find the area of circle
This Go program gets radius as user inputs and computes the area of semi-circle.
package main
import (
"fmt"
"math"
)
func main() {
var radius int
var area float32
fmt.Println("Finds area of semi-circle")
fmt.Println("--------------------")
fmt.Print("Enter radius: ")
fmt.Scanf("%d", &radius)
area = (math.Pi * (float32(radius) * float32(radius))) /2
fmt.Printf("Semi-circle Area: %.2f\n", area)
}
Output:
$ go build area-of-semicircle.go $ ./area-of-semicircle Finds area of semi-circle ------------------- Enter radius: 8 Semi-circle Area: 100.48
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Go Program to find area of circle
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