Write a program that prompts the user to enter the side of an octagon and displays its area. The area of an octagon is A = 2 (1+ √2)s², where s is the side of an octagon. Assume that the side entered is positive, and do not import the math module (or use any predefined functions). Sample output is shown below: Enter the side length of the octagon: 5.5 The area of an octagon with side length 5.5 is 146.05992052357223

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A: Program to get an integer input from the user.

Q: Sample Testcase 0: Input: 1.04667 Output: 0.50046 Sample Testcase 1: Input: 1.04667 20 Output:…

A: According to the Question below the Solution:   Output:

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A: Actually, program is an executable software that runs on a computer.

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Variables and Constant

Constants and variables are widely used in mathematical equations and expressions. They are also commonly found in the domain of programming, where each language has its own way to differentiate between a constant and a variable. Since they have all sorts of applications, knowing their differences is a good place to start.