foo.c:1:1: error: unknown type name 'import'
    1 | import math
      | ^~~~~~
foo.c:2:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'x'
    2 | x=int(input("Please in put a circle radius r= "))
      | ^
foo.c:7:7: warning: character constant too long for its type
    7 | print('area=',area,' ','Perimeter=',Perimeter)
      |       ^~~~~~~
foo.c:7:24: warning: character constant too long for its type
    7 | print('area=',area,' ','Perimeter=',Perimeter)
      |                        ^~~~~~~~~~~~

[Hydro](https://hydro.ac)提供评测服务