


'''simple docstring'''


from math import pi






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


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







'''simple docstring'''


import os






def  __lowerCAmelCase ():
		_UpperCAmelCase		:       List[Any]								=      os.path.join(os.path.dirname(__lowerCAmelCase   )      , "num.txt"   )
		with open(__lowerCAmelCase   ) as file_hand:
				return str(sum(int(__lowerCAmelCase   ) for line in file_hand   )   )[:10]


if __name__ == "__main__":
						print(solution())



