IN C++
Modify the above program to compute the side area, total area,
and volume of a cylinder and the area and volume of a sphere,
depending on the choice that the user makes. Your program should
ask users to enter 1 to choose cylinder or 2 for sphere, and
display an "invalid choice error" for other values.
For a cylinder, we want to compute:
Side area: (2*PI*r) * h
Total Area: 2*(PI*r2) + Side area
Volume: (PI*r2)*h
For a...