Câu 1:
uses crt;
var a,b,c:extended;
begin
clrscr;
write('Nhap 3 canh tam giac: '); readln(a,b,c);
if (sqrt(a)=sqrt(b)+sqrt(c)) or (sqrt(b)=sqrt(a)+sqrt(c)) or (sqrt(c)=sqrt(a)+sqrt(b)) then write('Day la tam giac vuong')
else write('Day khong phai la tam giac vuong');
readln;
end.
Câu 2:
uses crt;
var x:integer;
begin
clrscr;
write('Nhap so: '); readln(x);
if x mod 2=0 then
begin
writeln(x,':2=',x/2:0:2);
write(x,'.15=',x*15);
end
else write(x,' la so le');
readln;
end.