Derive the cylinder class from the base circle class. Assume the circle class has a protected member variable representing the radius called radius and declared as a double with a default value of 1.0. It also has a public function called calcVal that evaluates the area of a circle as PI * radius * radius where PI is a constant 3.14.

In your derived class include an additional protected member representing the length of the cylinder. Call this variable length. Have the default values for the cylinder class be 1 for both the radius and the length. For this derived cylinder class include a public function calcVal that evaluates the volume of the cylinder. (Hint: The volume of the cylinder is length * circle :: calcVal)

Output: Provide a detailed description of the process that took place in developing the solution to the above-mentioned question.

C++, please add a lot of explanation thanks!