





from math import pi







def    A				(							UpperCAmelCase  ,  UpperCAmelCase				):
					return 2 * pi * radius * (angle / 360)


if __name__ == "__main__":
							print(arc_length(90, 10))






import re







def    A				(							UpperCAmelCase				):
					_snake_case       :					Any				       =   re.compile(R"^(\+91[\-\s]?)?[0]?(91)?[789]\d{9}$"				)
					if match := re.search(UpperCAmelCase  ,  UpperCAmelCase				):
										return match.string == phone
					return False


if __name__ == "__main__":
							print(indian_phone_validator('+918827897895'))