





'''simple docstring'''




def 			_lowerCAmelCase     (    __snake_case    :					float     )	->	float:

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






def 			_lowerCAmelCase     (    __snake_case    :					float     )	->	float:

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


if __name__ == "__main__":
  import doctest

  doctest.testmod()






'''simple docstring'''




def 			_lowerCAmelCase     (    __snake_case    :					str					,				__snake_case    :					str     )	->	int:
     if len(__snake_case     ) != len(__snake_case     ):
          raise ValueError('String lengths must match!'     )

     __A		:					Optional[Any]						=			0

     for chara, chara in zip(__snake_case					,				__snake_case     ):
          if chara != chara:
               count += 1

     return count


if __name__ == "__main__":
  import doctest

  doctest.testmod()