How do i calculate the area of a circle?

Question

So, i'm programming in python 2.7 version(if the version is important, maybe the solution would be different in python 3 or above). Im doing an excercise that needs me to calculate an area of a circle. The code i have at this moment is something that should lead me to the solution, but i'm encountering all sorts of errors. The code goes like this
import math
def distance(x1, y1, x2, y2):
dx=x2-x1
dy=y2-y1
dsquared=dx**2+dy**2
result math.sqrt(dsquared)
return result
#this part is good and provides needed stuff, the stuff you are about to see, gives me all sorts of problems.

radius=distance(xc, yc, xp, yp)
result=area(radius)
return result

#and this should be the last part

def area2(xc, yc, xp, yp):
radius=distance(xc, yc, xp, yp)
result=area(radius)
return result

I should also mention that i'm a terrible mathematician, so there could potentially be some errors in the maths stuff itself. I appreciate any help.

Answer 1

For a more precise result you should import the constant pi from the math module.

from math import pi

def area_circle(radius):
return pi * radius * radius

Answer 2

sorry but now I do not feel like reading your code hahah, a solution could be this:

def area_circle(radius):
return radius ** 2 * 3.14

Answer 3

Hm, ok, thank you for an answer, ill give it a try a bit later, since im not near my computer at this moment

Answer 4

Great, thanks for the input