Question: Walden Water Wizards, Inc. wants a program that estimates the volume of a body of water based on its average depth, a list of n measurements of the width of the body of water taken at evenly spaced intervals and the length between the measurements (h). Write a function called vol Approx that takes as its parameters depth, list, n, and h and returns the approximate value. Use Simpson's rule to approximate the surface area of the body of water. Test your function thoroughly. You may wish to use the expanded Observed Function class of Programming Project 12.