Go language program to calculate trapezoid circumference

Following program shows you how to calculate trapezoid circumference.
This program gets trapezoid bases and sides from user and calculates circumference and prints it using following formula
Circumference = base1 + base2 + side1 +side2

package main

import "fmt"

func main() {

  var trapezoidBase1 float64
  var trapezoidBase2 float64
  var trapezoidSide1 float64
  var trapezoidSide2 float64
  var circumferenceOfTrapezoid float64
  fmt.Println("Please enter base1 of trapezoid:")
  fmt.Scanf("%f", &trapezoidBase1)
  fmt.Println("Please enter base2 of trapezoid:")
  fmt.Scanf("%f", &trapezoidBase2)
  fmt.Println("Please enter side1 of trapezoid:")
  fmt.Scanf("%f", &trapezoidSide1)
  fmt.Println("Please enter side2 of trapezoid:")
  fmt.Scanf("%f", &trapezoidSide2)
  circumferenceOfTrapezoid = trapezoidBase1 + trapezoidBase2 + trapezoidSide1 + trapezoidSide2
  fmt.Println("Circumference of trapezoid is: " , circumferenceOfTrapezoid)
}

Output:

Please enter base1 of trapezoid:
 5
Please enter base2 of trapezoid:
 8
Please enter side1 of trapezoid:
 12
Please enter side2 of trapezoid:
 12
Circumference of trapezoid is:  37