Answer:
Following are the program in the Python Programming Language.
#get input from the user length of the pizza
inputStr = input('Enter the length of pizza: ')
#convert input into float
L = float(inputStr)
#initialize the area of the pizza
A = L*L
#calculate the amount of peoples can eat pizza
men = int(A/100)
#print the number of peoples
print('\nPizza can be eaten by {} people'.format(men))
Output:
Enter the length of pizza: 20
Pizza can be eaten by 4 people
Explanation:
Following are the description of the program.