I need this in coding.

4. The following formula gives the distance between two points, (xi. yi) and (xz, y2) in the Cartesian plane: Given the center and a point on the circle, you can use this formula to find the radius of the circle. Write a program that prompts the user to enter the center and a point on the circle. The program should then output the circle's radius, diameter, circumference, and area. Your program must have at least the following functions