def area_polygon(s,l):
  from math import tan, pi
  
  area = s * (l ** 2) / (4 * tan(pi / s))
  return area
def is_not_prime(n):
    import math
    
    result = False
    for i in range(2,int(math.sqrt(n)) + 1):
        if n % i == 0:
            result = True
    return result