4. Use the program MATLAB for the following question:

A torus is shaped like a doughnut. If its inner radius is a and its outer radius is b, itsvolume and surface area are given by,

V = 1/4^2 (a +b )( ba )^2, A = ^2 (b^2 a^2)

i. Create a user-defined function that computes and from the arguments and .ii. Suppose that the outer radius is constrained to be 2 inches. greater than the innerradius. Write a script file that uses your function to plot A and V versus a for

0.5 a 5 inches.