(General Math) a. Design, write, compile, and execute a C++ program to calculate the vol...

(General Math) a. Design, write, compile, and execute a C++ program to calculate the volume of a sphere with a radius, r, of 3 in. The volume is given by this formula:

b. Manually check the values computed by your program. After verifying that your program is working correctly, modify it to determine the volume of a cube with a radius of 1.67 in.