var r,c,s: real;
begin
readln(r);
c:=2*pi*r;
s:=pi*r*r;
writeln('C = ',c:4:2,' s = ',s:4:2);
end.
Пример
5
C = 31.42 s = 78.54
var r,c,s: real;
begin
readln(r);
c:=2*pi*r;
s:=pi*r*r;
writeln('C = ',c:4:2,' s = ',s:4:2);
end.
Пример
5
C = 31.42 s = 78.54