





def   __snake_case    (       _lowerCAmelCase			:			float						)			->    float:

   if edge <= 0 or not isinstance(_lowerCAmelCase					,					_lowerCAmelCase						):
      raise ValueError("Length must be a positive."						)
   return 3 * ((25 + 10 * (5 ** (1 / 2))) ** (1 / 2)) * (edge**2)

def   __snake_case    (       _lowerCAmelCase			:			float						)			->    float:

   if edge <= 0 or not isinstance(_lowerCAmelCase					,					_lowerCAmelCase						):
      raise ValueError("Length must be a positive."						)
   return ((15 + (7 * (5 ** (1 / 2)))) / 4) * (edge**3)


if __name__ == "__main__":
 import doctest

 doctest.testmod()







def   __snake_case    (       _lowerCAmelCase			:			int						)			->    bool:
   if num < 0:
      return False

   A_       :					int        =      num
   A_       :					int        =      0
   while num > 0:
      A_       :					str        =      rev_num * 10 + (num % 10)
      num //= 10

   return num_copy == rev_num


if __name__ == "__main__":
 import doctest

 doctest.testmod()
