please code this in c# (vb) and also include photos of the form design

The following formula gives the distance between two points (x1, y1) and (x2, y2) in the Cartesian plane:

2 2

(x-x) + (y-y)

2 1 2 1

Given the center and a point on a circle, you can use this formula to find the radius of the circle. Write a

program that allows the user to enter the center point and a point on the circle into textboxes (you can

use four for the four coordinates). The program should then display in a listbox the circles radius,

diameter, circumference, and area. Your program must have at least the following methods:

distance

: This method takes as its parameters four numbers that represent two point in the

plane and returns the distance between them

radius

: This method takes as its parameters four numbers that represent the center and a point

on the circle, calls the method distance to find the radius and returns the circles radius

circumference

: This method takes as its parameter a number that represents the radius of the

circle and returns the circles circumference. (If r is the radius, the circumference is

2r.)

area

: This method takes as its parameter a number that represents the radius of the circle and

returns the circles area. (If r is the radius, the area is

r

2

.)

Assume that

= 3.14159.