Create a class Rectangle. The class has attributes length and width, each of which defaults to 1. It has methods that calculated the perimeter and the area of the rectangle. It has set and get methods for both length and width. It has set and get funtionsfor both length and width. The set function should verify that length and width are each floating-point numbers larger than 0.0 and less than 20.0. Write a program to test class Rectangle
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