Feb 8, 2021 · Feb 7, 2021
diff --git a/exercises/04-Call-a-function/README.md b/exercises/04-Call-a-function/README.md

 # `04` Calling a function

 A function could receive0 parameters, andyou canit always returns something,event if you don't explicitly add the `return` statement.
 A function could receivezero parameters, and it always returns something,even if you don't explicitly add the `return` statement.

 :point_up: [Click here to read more about functions](https://content.breatheco.de/lesson/working-with-functions-python)

    return length * edge
 ```

 If you want to use that function to calculate the area of a square with
 If you want to use that function to calculate the area of a square with:

 ```python
 length = 3

 # 📝 Instructions:

 Create a new variables named square_area1, square_area2, square_area3 and call the function calculate_area3 times onefo each square in the picture, for example:
 Create a new variables named square_area1, square_area2, square_area3 and call the function calculate_areathree times onefor each square in the picture, for example:

 ```python
 # For the first figure:

 # 💡 Hint:

 Call the `calculate_area` function3 times, one per each square, passing the length and edge of each square.
 Call the `calculate_area` functionthree times, one per each square, passing the length and edge of each square.

 :tv: [9 min video about functions in python](https://www.youtube.com/watch?v=NE97ylAnrz4)
Original file line number	Diff line number	Diff line change
Expand Up		@@ -4,7 +4,7 @@ tutorial: "https://www.youtube.com/watch?v=NU5iW_bWwmY"

		# `04` Calling a function

		A function could receive0 parameters, andyou canit always returns something,event if you don't explicitly add the `return` statement.
		A function could receivezero parameters, and it always returns something,even if you don't explicitly add the `return` statement.

		:point_up: [Click here to read more about functions](https://content.breatheco.de/lesson/working-with-functions-python)

Expand All		@@ -15,7 +15,7 @@ def calculate_area(length, edge):
		return length * edge
		```

		If you want to use that function to calculate the area of a square with
		If you want to use that function to calculate the area of a square with:

		```python
		length = 3
Expand All		@@ -30,7 +30,7 @@ area = calculate_area(3,6)

		# 📝 Instructions:

		Create a new variables named square_area1, square_area2, square_area3 and call the function calculate_area3 times onefo each square in the picture, for example:
		Create a new variables named square_area1, square_area2, square_area3 and call the function calculate_areathree times onefor each square in the picture, for example:

		```python
		# For the first figure:
Expand All		@@ -41,7 +41,7 @@ square_area1 = calculate_area(4,4)

		# 💡 Hint:

		Call the `calculate_area` function3 times, one per each square, passing the length and edge of each square.
		Call the `calculate_area` functionthree times, one per each square, passing the length and edge of each square.

		:tv: [9 min video about functions in python](https://www.youtube.com/watch?v=NE97ylAnrz4)