Write a Math-lab script for the following

2. The cross-sectional area of a disk with inner radius r and outer radius ra is given by (r3 r). Let t = r2- r1. If t is small compared with 2r, an approximate expression for the area is 2mr1t. Assume that r2 = 100 mm. Consider twenty different values of t starting from 1 mm to 10 mm. For each of these cases, calculate the exact and approximate areas and then, the relative error in the approximation: A - Aapprox where A is the exact area and Aapprox is the approximate area. Plot the relative error (e) vs thickness (t)