19. [-/0.33 Points] DETAILS 0/5 Submissions Used MY NOTES ASK YOUR TEACHER Because of the curvature of the earth, the maximum distance D that you can see from the top of a tall building or from an airplane at height h is given by the function D(h) = V 2rh + 12 where r = 3960 mi is the radius of the earth and D and h are measured in miles. (Round your answers to one decimal place.) (a) Find D(0.3) and D(0.6). D(0.3) = mi D(0.6) = mi (b) How far can you see from the observation deck of Toronto's CN Tower, 1135 ft above the ground? mi (c) Suppose that a commercial aircraft is flying at an altitude of 8 mi. How far can the pilot see? mi