Ruby program to calculate triangle area

Following program shows you how to calculate triangle area.
This program gets triangle base and height from user and calculates area and prints it using following formula
Area = base X height / 2

 puts "Enter the base of triangle:"
 triangleBase = gets.to_f
 puts "Enter the height of triangle:"
 triangleHeight = gets.to_f
 areaOfTriangle = (triangleBase * triangleHeight) / 2
 puts "Area of triangle is: #{areaOfTriangle}"

Output:

Enter the base of triangle:
2
Enter the height of triangle:
3
Area of triangle is: 3.0