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根據百分率找數量（一）: 例3
Author:
GeoGebra Institute of Hong Kong
Topic:
Percentages
GeoGebra
New Resources
第八周作业
球体的体积推导（优化版）
兩位數加法
拼砌四邊形
画直线等分三角形的面积
Discover Resources
拿破侖定理(外拿破侖)證明一
時鐘與數學
圖解多項式的乘積
旁心
正方体展开图的副本
Discover Topics
Constructions
Quadratic Functions
Cosine
Fractal Geometry
Trapezoid