PI = 3.1415

class Kolo():
    promien = 0
    pole = 0
    obw = 0

    def __init__():
        pass

    def wyswietlPole():
        pass

    def wyswietlObwod():
        pass


class Prostakat():
    dl = 0
    sz = 0
    pole = 0
    obw = 0

    def __init__():
        pass

    def wyswietlPole():
        pass

    def wyswietlObwod():
        pass