4.1 visual Circulo

namespace practica4._1form
{
public partial class CirculoF : Form
{
public CirculoF()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
double Radio, Area, Perimetro;
Radio = double.Parse(textBox1.Text);

Area = Math.PI * Radio * Radio;
Perimetro = 2 * Radio * Math.PI;

listBox1.Items.Add("El Area del Circulo es: " + Area);
listBox1.Items.Add("");
listBox1.Items.Add("El Perimetro del Circulo es: " + Perimetro);
}

private void button2_Click(object sender, EventArgs e)
{
listBox1.Items.Clear();
textBox1.Clear();
}

private void button3_Click(object sender, EventArgs e)
{
Close();
}



}
}