Program Typlex271;
Uses crt;
Var a,b,c,d,h: double;
Begin
Writeln('Nhap lan luot 2 canh ben: '); Readln(a,c);
Writeln('Nhap lan luot 2 canh day: '); Readln(b,d);
Writeln('Chu vi: ',a+b+c+d:8:3);
Writeln('Dien tich: ',(b+d)*h/2:8:3);
Readln
End.
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