3.14×8×2=50.24(厘米);
答:针尖经过的路程是50.24厘米,
有一个时钟,分针长8cm,这根分针走一圈,针尖走过的路程是多少厘米?
有一个时钟,分针长8cm,这根分针走一圈,针尖走过的路程是多少厘米?
数学人气:714 ℃时间:2019-11-04 18:24:30
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