#!/usr/bin/env python3

def area_circulo(r):
    return 3.14*(r**2)

def area_quadrado(l):
    return l*l

def area_triangulo(b,a):
    return (b*a)/2

def area_retangulo (b,a):
    return b*a

def area_trapezio(b1,b2,a):
    return ((b1+b2)*a)/2

def area_losando(d1,d2):
    return (d1*d2)/2

def area_pentagono(a,p):
    return (a*p)/2

print ("Hello Word!")
    
