Write a program that defines the named constant PI, const double PI = 3.1419;, which sto...

Write a program that defines the named constant PI, const double PI = 3.1419;, which stores the value of π. The program should use PI and the functions listed in Table 6-1 to accomplish the following:

a. Output the value of .

b. Prompt the user to input the value of a double variable r, which stores the radius of a sphere. The program then outputs the following:

i. The value of , which is the surface area of the sphere.

ii. The value of , which is the volume of the sphere.

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