Question

# given a radius, find the area of a circle

def get_area_circle(r):
  
    """
        what it takes
            radius of a circle (any positive real number)

        what it does:
            computes the area of a circle
            given a radius, find the area of a circle
            area = pi*r2 (pi times r squared)

        what it returns
            area of a circle. Any positive real number (float)
    """
  
     # your code goes in here
  
    return

Test Case for Question 3. Do not delete or alter the cell below

try:
    if ((get_area_circle(5) > 78) and (get_area_circle(5)<79)):
        score['question 3'] = 'pass'
    else:
        score['question 3'] = 'fail'
except:
    score['question 3'] = 'fail'
  
get_area_circle(5)

# Given a number, this function will compute the factorial

def get_factorial(number):
  
    """
        what it takes?
            number to calculate its factorial

        what it does?
            given a number, find its factorial such as 5! = 20
            Do not use a python built-in function - code it

        what it returns?
            factorial of a number
            5! shoukld return 120
            It will return integer
    """
  
    # your code goes in here
  
    return

Test Case for Question 4. Do not delete or alter the cell below

try:
    if get_factorial(5) == 120:
        score['question 4'] = 'pass'
    else:
        score['question 4'] = 'fail'
except:      
    score['question 4'] = 'fail'

get_factorial(5)

Answer 1

import math
# given a radius, find the area of a circle

def get_area_circle(r):
  
"""
what it takes
radius of a circle (any positive real number)

what it does:
computes the area of a circle
given a radius, find the area of a circle
area = pi*r2 (pi times r squared)

what it returns
area of a circle. Any positive real number (float)
"""
  
# your code goes in here
area=math.pi*(r*r);
  
return area;

  
print(get_area_circle(5));

# Given a number, this function will compute the factorial

def get_factorial(number):
  
"""
what it takes?
number to calculate its factorial

what it does?
given a number, find its factorial such as 5! = 20
Do not use a python built-in function - code it

what it returns?
factorial of a number
5! shoukld return 120
It will return integer
"""
  
# your code goes in here
if(number==0):
return 1;
  
return number*get_factorial(number-1);
print(get_factorial(5));

Code screenshot:

Expected output: