Sum Areas Through an Interface

The interface IShape declares double Area(). Complete Rectangle (area is width times height) and Square (area is side times side). The tester stores both in an IShape[] and adds up their areas. Do NOT write a Main method.

For a Rectangle(2, 3) and a Square(4) the total is 22, so the program prints the output shown in Expected Output.

Expected Output:

22↵

= newline. The output ends with a newline — print one after the last line.

Hints2 available

Topics:

Interfaces

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