program CircleData;
uses Math;
var
  r, s, l: Real;
begin
  r := 5;
  s := Pi * Sqr(r);
  l := 2 * Pi * r;
  writeln('=== Завдання 1 ===');
  writeln('Радіус = ', r:0:2);
  writeln('Площа кола = ', s:0:2);
  writeln('Довжина кола = ', l:0:2);
end.
 
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