a. Represent each surface area as a definite integral, and evaluate the integral using your calculator s integral command.
b. Find the area of the surface when the graph of y = √(4 - x2) is rotated about the x-axis-
i. for 0 ≤ x ≤ 1, ii. for 1 ≤ x ≤ 2 , and iii. for 2 ≤ x ≤ 3.