Pythagoras Theorem

Public Class Form1
    Dim a, b, c As Single

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
     
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        a = Val(TextBox1.Text)
        b = Val(TextBox2.Text)
        c = (a ^ 2 + b ^ 2) ^ (1 / 2)
        TextBox3.Text = c
    End Sub
End Class