program tinh_dien_tich_hinh_tam_giac;
uses crt;
var a, h: real;
begin
clrscr;
write('Nhap do dai canh day: '); readln(a);
write('Nhap do dai chieu cao: '); readln(h);
writeln('Dien tich tam giac la: S = ',(a*h)/2:10:2);
readln
end.
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