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根據百分率找數量（一）: 例3的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
算柱 (兩位數)
近似值：有效數字
美國國旗 (Codex 版)
第八周作业
Earth with coastline
Discover Resources
Symetry
圓與三角形
數列與級數
認識一次函數關係式與圖形
testing2
圓周 (圖形C) 的複本
Discover Topics
Differential Equation
Conditional Probability
Confidence Interval
Fractal Geometry
Secant Line or Secant