Draw circle using python

import turtle

 
           
def drawPolygon(t, sideLength, numSides):
    turnAngle = 360 / numSides
    for i in range(numSides):
        t.forward(sideLength)
        t.right(turnAngle)

def drawCircle(anyTurtle, radius):
    circumference = 10 * 3.1415 * radius
    sideLength = circumference / 360
    drawPolygon(anyTurtle, sideLength, 360)


wn = turtle.Screen()
wheel = turtle.Turtle()
turtle.pen(fillcolor="black", pencolor="red", pensize=10)
drawCircle(wheel, 20)
turtle.fillcolor('red')

wn.exitonclick()