Polymorphic List Total

Complete AreaCalculator.TotalArea so it returns the sum of Area() for every Shape in the list. Each shape computes its own area through its overridden Area() method, so one loop works for all shape types. Do NOT write a Main method.

For a Square(2) (area 4) and a Rectangle(3, 4) (area 12) the program prints:
16

Expected Output:

Topics:

Polymorphism

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