球体表面积
2014-11-30 09:21
本 GeoGebra 范例演示球体表面积的计算与几何推导。通过 Sphere（球体）、Cylinder（圆柱）和 IntersectPath（交线路径）等命令构建三维几何模型，直观展示球体表面积与其外接圆柱侧面积之间的经典关系（阿基米德定理：球的表面积等于外接圆柱的侧面积，公式为 4πr²）。构造中包含多个几何对象及文本标注（如 lateral 侧面积），帮助学习者从立体几何角度理解球体表面积公式的来源与几何意义，适用于中学及大学数学教学。
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