Set up and evaluate the definite integral for the area of the surface generated by revolving the curve about the y-axis. (Round your final answer to three decimal places.) y = 1 − x2 36 , 0 ≤ x ≤ 6

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.