Please review my code area keeps equaling $0\mathrm{.}00$ when it should be $10\mathrm{.}83$ using the sample run values

Sample Run $($User input enclosed in $<>)$

Enter the number of sides: $.<3>$

Enter the side's.length: $.<5>$

$10\mathrm{.}83$

$****************************************************$

My Code

$****************************************************$

import math

perimeter $=0\mathrm{.}0$

apothem $=0\mathrm{.}0$

area $=0\mathrm{.}0$

def main$($perimeter$,$ apothem, area$)$:

number$\_$of$\_$sides $=$ int$($input$(\text{'}$Enter the number of sides: $\text{'}))$

side$\_$length $=$ float$($input$("$Enter the side's length: $"))$

show$\_$perimeter$($number$\_$of$\_$sides, side$\_$length$)$

show$\_$apothem$($number$\_$of$\_$sides, side$\_$length$)$

show$\_$area$($perimeter$,$ apothem$)$

print$($f$\text{'}\{$area:$\mathrm{.}2$f$\}\text{'})$

def show$\_$perimeter$($number$\_$of$\_$sides, side$\_$length$)$:

perimeter $=$ number$\_$of$\_$sides $*$ side$\_$length

return perimeter

def show$\_$apothem$($number$\_$of$\_$sides, side$\_$length$)$:

apothem $=$ side$\_$length $/(2*$ math.tan$($math$.$radians$(180/$ number$\_$of$\_$sides$)))$

return apothem

def show$\_$area$($perimeter$,$ apothem$)$:

area $=(0\mathrm{.}5*$ perimeter $*$ apothem$)$

return area

main$($perimeter$,$ apothem, area$)$

$*****************************************************$

Question Parameters

$*****************************************************$

Assignment: A regular polygon has sides that are of equal length. The area of a regular polygon can be calculated using this formula:

area $=0\mathrm{.}5*$ perimeter $*$ apothem

You can calculate the perimeter with the following formula:

perimeter $=$ number$\_$of$\_$sides $*$ side$\_$length

The apothem is the distance from the center of the polygon to the midpoint of one of its sides. You can calculate the apothem with this formula:

apothem $=$ side$\_$length $/(2*$ math. tan$($math$.$radians$(180/$ number$\_$of$\_$sides$)))$

Note that you need to use the math.tan and math.radians functions in the calculation.

Write a program that prompts the user to input the number of sides $($an int$)$ and the side length $($a float$).$

Write a function named apothem that calculates the length of the apothem, and a function named area that calculates the area of the polygon.

The program should display the area with only two decimal digits.