Question

有一钟,时针长6cm,分针长8cm,秒针长10cm.问,这只钟一昼夜秒针的针尖走过多少m?分针的针尖走过多少m

Answer 1

一昼夜秒针的针尖走过

= 20π×60×24

= 90432 cm

= 904.3 m

一昼夜分针的针尖走过

= 16π×24

= 1206.4 cm

= 12.06 m