def area_polygon(s,l):
  from math import tan, pi
  
  area = s * (l ** 2) / (4 * tan(pi / s))
  return area
def area_polygon(s, l):
    from math import tan, pi
    _i_3 = 0
    if _i_3 > _i_3:
        area = s * (l ** 2) / (4 * tan(pi / s))
   
    area = s * (l ** 2) / (4 * tan(pi / s))
    return area