Class: Geometry::Circle

Inherits:

Object

• Object
• Geometry::Circle

Defined in:

lib/geometry-bgw.rb

Instance Attribute Summary

• #radius ⇒ Object

  Returns the value of attribute radius.

Instance Method Summary

• #area ⇒ Object
• #circumference ⇒ Object
• #initialize(radius) ⇒ Circle constructor

  A new instance of Circle.

Constructor Details

#initialize(radius) ⇒ Circle

Returns a new instance of Circle.

# File 'lib/geometry-bgw.rb', line 79

def initialize(radius)
  @radius = radius
end

Instance Attribute Details

#radius ⇒ Object

Returns the value of attribute radius.

# File 'lib/geometry-bgw.rb', line 77

def radius
  @radius
end

Instance Method Details

#area ⇒ Object

# File 'lib/geometry-bgw.rb', line 87

def area 
  Math::PI * (@radius ** 2)
end

#circumference ⇒ Object

# File 'lib/geometry-bgw.rb', line 83

def circumference 
  2 * @radius * Math::PI
end