1) program ht1;
var v,p,r:real;
begin
p:=3.14;
writeln ('vvedite r');
readln (r);
v:=4/3*p*(r*r*r);
writeln(v);
end.
2) program ht2;
var x,y,r:integer;
begin
writeln('vvedite r);
readln(r);
writeln('vvedite x');
readln (x);
writeln ('vvedite y');
readln (y);
if (x<=r) and (y<=r)
then writeln ('prinadlezhit')
else writeln ('ne prinadlezhit');
end.
3) а в третью я врубиться не могу.
Program Shar;
Var
r, v: Real;
Begin
Write('r = ');
ReadLn(r);
v := 4 / 3 * 3.14 * r * r * r;
WriteLn('v = ', v);
ReadLn;
End.