Assignment(6-4)

Write a program that defines the named constant PI, const double PI = 3.14159;, which stores the value of . The program should use PI and the functions listed in Table 6-1 to accomplish the following:

Output the value of .

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:

The value of 4.0r, which is the surface area of the sphere.

The value of (4.0/3.0)r, which is the volume of the sphere.