Implement the following classes

Task: 1. Implement the following classes: Shape Rectangle extends Shape - name: String - length: double - width: double + Shape (name: String) /* accessor-mutator */ + area () : double + Rectangle (name : String, length: double, width: double) + perimeter() : double * accessor-mutator ./ + area () : double + perimeter (): double Task: 1. Implement the following classes and invoke area(), perimeter() for object of Triangle: Polygon Triangle extends Polygon numSide : ine sideA: double sideB: double constructor */ sidec: double /* accessor-mutator "/ + area () : double * constructor */ perimeter() : double accessor-mutator . / + area () : double + perimeter () : double