轉動的車輪 - 拼圖
By Dorothy
at 2010-03-31T09:14
at 2010-03-31T09:14
Table of Contents
卸貨卡車和小型自用車,都以時速八十公里,在高速公路上奔馳著。
卸貨卡車的輪子直徑,是自用車的3倍。
請問,如果兩輛車的速度都相同,那麼車輪轉動一圈的時間,是卸貨卡車所需的多?
還是小型自用車所需的多?
--
卸貨卡車的輪子直徑,是自用車的3倍。
請問,如果兩輛車的速度都相同,那麼車輪轉動一圈的時間,是卸貨卡車所需的多?
還是小型自用車所需的多?
--
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拼圖
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By Sarah
at 2010-04-04T16:24
at 2010-04-04T16:24
By Brianna
at 2010-04-05T10:49
at 2010-04-05T10:49
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