1.SIMPLE FUNCTION

def calculate_area():
pie = 22/7
for i in range(10):
radius = float(input(“Enter the radius of the circle: “))
area = pie * radius**2
print(“The area of the circle with radius”, radius, “is”, area)

calculate_area()

2. PARAMETERIZED FUNCTION

def calculate_area(radius):
pie = 22/7
area = pie * radius**2
return area

for i in range(10):
radius = float(input(“Enter the radius of the circle: “))
area = calculate_area(radius)
print(“The area of the circle with radius”, radius, “is”, area)

3. RETURN TYPE WITH FUNCTION

def calculate_area(radius):
pie = 22/7
area = pie * radius**2
return area

for i in range(10):
radius = float(input(“Enter the radius of the circle: “))
area = calculate_area(radius)
print(“The area of the circle with radius”, radius, “is”, area)

def get_circle_area(radius_list):
area_list = []
for radius in radius_list:
area = calculate_area(radius)
area_list.append(area)
return area_list

radius_list = []
for i in range(10):
radius = float(input(“Enter the radius of the circle: “))
radius_list.append(radius)

area_list = get_circle_area(radius_list)
for i in range(10):
print(“The area of the circle with radius”, radius_list[i], “is”, area_list[i])

4. Return type with parameterized function:

def calculate_area(radius):

pie = 22/7
area = pie * radius**2
return area

def get_circle_area(radius_list):
area_list = []
for radius in radius_list:
area = calculate_area(radius)
area_list.append(area)
return area_list

radius_list = []
for i in range(10):
radius = float(input(“Enter the radius of the circle: “))
radius_list.append(radius)

area_list = get_circle_area(radius_list)
for i in range(10):
print(“The area of the circle with radius”, radius_list[i], “is”, area_list[i])