Practica 3.1 Visual

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WindowsFormsApplication1

{

public partial class Form1 : Form

{

double r, a, v, area;

public Form1()

{

r = a = v = area = 0.0;

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

r = double.Parse(textBox1.Text);

a = double.Parse(textBox2.Text);

v = 3.1416 * r * r * a;

area = 2 * (3.1416 * r * r + 3.1416 * r * a);

textBox3.Text = v.ToString();

textBox4.Text = area.ToString();

}

private void Form1_Load(object sender, EventArgs e)

{

}

}

}