Please write in C++ language, include explanations and create a code that runs successfully.

The following formula gives the distance between two points, (x,y) and (x,y) 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. Instructions Write a program that prompts the user to enter the center and a point on the circle.

The program should then output the circles radius, diameter, circumference, and area.

Your program must have at least the following functions: distance: This function takes as its parameters four numbers that represent two points in the plane and returns the distance between them. radius: This function takes as its parameters four numbers that represent the center and a point on the circle, calls the function distance to find the radius of the circle, and returns the circles radius. circumference: This function 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 function 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.) Assume that = 3.1416. Format your output with setprecision(2) to ensure the proper number of decimals for testing!