Traditional Culture Encyclopedia - Traditional culture - The minute hand of Xiao Yang's quartz clock is 3.5 cm long. How many centimeters did the tip of the minute hand walk after an hour? What about in three hours?
The minute hand of Xiao Yang's quartz clock is 3.5 cm long. How many centimeters did the tip of the minute hand walk after an hour? What about in three hours?
1 hour walking distance
=2×π×3.5
=7π
= 21.98cm.
It's a three-hour journey
=2 1.98×3
=65.94 cm
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