Trả lời:
Program S_Hinh_Tron;
Uses Crt;
Var r,S:real;
Begin
Clrscr;
Writeln(‘TINH DIEN TICH HINH TRON:’);
Write (‘Nhap ban kinh R=’);readln(r);
dt:=pi*r*r;
Writeln(‘Dien tich hinh tron la:’,dt:6:2);
Readln;
End.
Chúc bạn học tốt!
Program dthinhtron;
uses crt;
var r,s:real;
begin
clrscr;
writeln('Nhap ban kinh r: ');
readln(r);
s:=r*r*PI;
writeln('dien tich hin tron la: ',s:8:3,'m2);
readln
end.
var r,dt:real;
begin
writeln('Nhap ban kinh r: ');readln(r);
dt:=r*r*pi;
writeln('dien tich hinh tron la: ',s:6:2);
readln;
end.
ấy lại
var r,dt:real;
begin
writeln('Nhap ban kinh r: ');readln(r);
dt:=r*r*pi;
writeln('dien tich hinh tron la: ',dt:6:2);
readln;
end.