Class: Geometry::Circle
- Inherits:
-
Object
- Object
- Geometry::Circle
- Defined in:
- lib/geometry-befr.rb
Instance Attribute Summary collapse
-
#radius ⇒ Object
Returns the value of attribute radius.
Instance Method Summary collapse
- #area ⇒ Object
- #circumference ⇒ Object
-
#initialize(radius) ⇒ Circle
constructor
A new instance of Circle.
Constructor Details
#initialize(radius) ⇒ Circle
Returns a new instance of Circle.
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# File 'lib/geometry-befr.rb', line 80 def initialize(radius) @radius = radius end |
Instance Attribute Details
#radius ⇒ Object
Returns the value of attribute radius.
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# File 'lib/geometry-befr.rb', line 78 def radius @radius end |
Instance Method Details
#area ⇒ Object
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# File 'lib/geometry-befr.rb', line 88 def area Math::PI * (@radius ** 2) end |
#circumference ⇒ Object
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# File 'lib/geometry-befr.rb', line 84 def circumference 2 * @radius * Math::PI end |