2 câu trả lời
Program CV_hinh_tron
Var R: integer ;
S,C : real;
Const Pi=3,14;
Writeln(‘Nhap ban kinh‘);
Readln(R);
C:=r*r*3,14
Writeln(‘Chu vi la C= ‘,C);
Readln
End.
Program bai_lam;
uses crt;
var a,CV:integer;
Begin
Write('nhap gia tri cho duong kinh');readln(a);
CV:=a*3,14
Write('chu vi hinh tron la:',CV);
Readln;
End.