c1:

uses crt;

begin

writeln('bai kiem tra cuoi ky mon tin hoc 8');

writeln('ho ten BXH lop 8');

end.

c2

uses crt;

begin

writeln('chao cac ban');

writeln('toi ten BXH lop 8');

end.

C3:

uses crt;

var a,b:longint;

begin

clrscr;

write('a=');writeln('b=');

readln(a,b);

writeln((sqr(a)*a+b)/(sqr(a+b));

end.

C4:

uses crt;

var a,b:real;

begin

write('a=');writeln('b=');

readln(a,b);

writeln(a*b);

writeln(a+b);

end.

C5:

uses crt;

var a,b:longint;

begin

write('a=');writeln('b=');

readln(a,b);

writeln((a+b)*2);

writeln(a*b);

end.

C6:

uses crt;

var r:longint

cv,s:real;

const pi=3.14;

begin

write('r=')

readln(r);

s:=sqr(r)*pi;

cv:=2*r*pi;

writeln('s',s,'    cv',cv);

readln

end.

1)------------------------------------------------

uses crt;

begin

writeln('bai kiem tra cuoi ky mon tin hoc 8');

writeln('ho ten conan lop 12a1');

end.

2)----------------------------------------------------

uses crt;

begin

writeln('chao cac ban');

writeln('toi ten conan lop 12a1');

end.

3)-----------------------------------------------

uses crt;

var a,b:longint;

begin

clrscr;

readln(a,b);

writeln((sqr(a)*a+b)/(sqr(a+b));

end.

4)-----------------------------------------------

uses crt;

var a,b:real;

begin

readln(a,b);

writeln(a*b);

writeln(a+b);

end.

5)--------------------------------------------------

uses crt;

var a,b:longint;

begin

readln(a,b);

writeln((a+b)*2);

writeln(a*b);

end.

6)-----------------------------------------------

uses crt;

var r:longint

cv,s:real;

const pi=3.14;

begin

readln(r);

s:=sqr(r)*pi;

cv:=2*r*pi;

writeln('s',s,'    cv',cv);

readln

end.