program paralepiped;
var
a, b, c, v: real;
begin
writeln('vvedite a:');
readln(a);
writeln('vvedite b:');
readln(b);
writeln('vvedite c:');
readln(c);
v := a * b * c;
writeln('v=', v);
readln;
end.
program paralepiped;
var
a, b, c, v: real;
begin
writeln('vvedite a:');
readln(a);
writeln('vvedite b:');
readln(b);
writeln('vvedite c:');
readln(c);
v := a * b * c;
writeln('v=', v);
readln;
end.