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namespace MindBox.Lib;
public class Circle : FlatShape
{
private readonly double _radius;
public required double Radius
{
get
{
return _radius;
}
init
{
if (value <= 0.0)
{
throw new ArgumentException($"Radius cannot be non-positive: {value}");
}
else
{
_radius = value;
}
}
}
public override double GetArea()
{
if (_area != null)
{
return _area.Value;
}
else
{
_area = Math.PI * _radius * _radius;
return _area.Value;
}
}
}
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