1. Write a C++ program (named threeValueAverage.cpp) 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 (named circleAreaCircumference.cpp) that accept a circle radius from the user and then output the "Circumference" and the "Area" of the circle. Write a C++ program (named weightConverter.cpp) 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. (Hint 1 kilogram2.2 pounds, use constant). 3. Upload to the assignment dropbox the 3 source files threeValueAverage.cpp circleAreaCircumference.cpp weightConverter.cpp