Question: ```
SELECT (COUNT (*))
FROM dbo.DIM_Calendar
WHERE (IdCalendar = 20190916  AND IdCalendar = 20191031)

```

The IDCalendar its an INT type, I would like to know the count between those 2 IdCalendars.

Answer: 
You need to call the method by putting `()`

```
print(f"c1 Alan , cevre: {c1.area()} , {c1.perimeter()} \n c2 alan , cevre: {c2.perimeter()} , {c2.area()}")

```
Try `c1.area()` and `c1.perimeter()`.

Hope this helps :)