A, B, C, and D run one circle on four circular runways with a width of 1.2 meters. If A is on the first track, B is on the second track, C is on the third track, and D is on the fourth track, then it is determined At the starting position, how many meters should D be in front of A.
甲、乙、丙、丁在4条宽度为1.2米的环形跑道上跑一圈，如果甲在第一道，乙在第二道，丙在第3道，丁在第4道，那么，确定起跑位置时，丁应当在甲前面多少米处．
<result>22.608</result>