please write in c#

output has to look like this:

2. (20 points) a) Write a C# method Distance2 that returns the distance between point I (xl, yl) and point2 (x2, y2). [Hint:] The distance between two given points can be calcu nt:] The distance between two given points can be calculated using the below formula b) Write a C# method Area()/Triang le that returns the area of a given triangle S with sides of a, b and c. Hint:] Heron's formula: Where s = (a + b + c) is the semi-perimeter, or one half of the triangle's perimeter