$.(20)$ A spherical sector is a part of a sphere, consisting of a

spherical cap $($which is a part of the sphere created by putting a

plane through the sphere$),$ and the cone that begins at the center

of the sphere and extends to the base of the cap. The volume V

of a spherical sector is given by:

$=2!$

$3$

where r is the radius of the sphere, and h is the height of the

spherical cap. Write a program that consists of a live script with a

function. The script:

$$ prompts the user for the values of the radius and the height

$$ calls a function to calculate the volume

$$ prints the volume in a nice sentence format with three

decimal places