In this exercise, you will modify the program from Lab 9-1 in Chapter 9. Follow the instructions for starting C++ and viewing the TryThis10.cpp file, which is contained in either the Cpp8\Chap10\TryThis10 Project folder or the Cpp8\Chap10 folder. (Depending on your C++ development tool, you may need to open this exercise’s project/solution file first.) Modify the program to use void functions to calculate the area and the diameter. Test the application appropriately.