# Classes

# Goals

# Step 1

Type this in the file circle.rb:class Circle def initialize(radius) @radius = radius end def area Math::PI * (@radius ** 2) end def perimeter 2 * Math::PI * @radius end end print "What is the radius of your circle? > " radius = gets.to_i a_circle = Circle.new(radius) puts "Your circle has an area of #{a_circle.area}" puts "Your circle has a perimeter of #{a_circle.perimeter}"Type this in the terminal:ruby circle.rb

# Explanation

# Next Step:

Go on to How To Write A Program