
如圖所示,圖中有一根蚊香。354Please respect copyright.PENANAwFutV61zVT
由點燃 到燃燒殆盡,是1小時(60分鐘)
請問,需要多少根蚊香,354Please respect copyright.PENANAOx5xrXjinh
才能準確計算出45分鐘呢?354Please respect copyright.PENANAKwD0A7jMt4
(方法又是什麼呢?)
【附註】354Please respect copyright.PENANACSTR52SqpM
蚊香 不能切,也不能折唷~