Suppose that the calling population for a particular service facility is uniformly distributed over each area shown, where the service facility is located at (0, 0). making the same assumptions as in sec. 26.5, derive the expected round-trip travel time per arrival e(t) in terms of the average velocity v and the distance r.
(a)

(b)

(c)

(d)

(r, 2r) (0.0) S-r (r,20 (3r, r) (0,0) (r-3r) r, r) (-, o) (2r, 0) (0,0) (2r-r -2r) (r, -2r) (-2r, 3r) (0,3) (2r, 3r) (0, r) (0, 0) 2r, r (0,-3r) (2c-3r)