1. Write a C++ program that accept 3 integers from a user and then display the accurate average. 2. Given that Pl 3.14159 (as constant), write a C++ program that accept a circle radius from the user and then output the "Circumference" and the "Area" of the circle. 3. Write a C++ program that ask the user to input weight in bounds and output the equivalent weight in kilograms. Output both the weights (bound and kilograms) rounded to two decimal places