V 200 6 R1= --(t4 - t2) = ----- 12.66 3600 ~ 4.56 10 km 2 2

R1 6 R2 = ------ ~ 1.93 10 km 2.37

P (2 × 24 + 22) × 3600 6 r=V ----= 200 ---------------------------- = 8.02 10 km 2p 2 × 3.14