Cylinder Construction and Volume Calculation by D.Jayaseelan (2)

①This example demonstrates how to construct a 3D cylinder in GeoGebra using points, segments, and the Cylinder command, while computing its volume in real time. ②Core mathematical concepts include the geometric definition of a cylinder (circular base, height, generatrix), the volume formula V=πr²h, and the relationships among basic solid geometry elements (points, segments, circles). ③Construction highlights: from the summary, the Cylinder command generates the solid, Point defines key points A, B, C, D, Segment creates segments d, c, e serving as radius or height, Volume computes the volume, and objects r (radius), h (height), b (base) are involved. ④Suitable for middle school or high school geometry lessons, helping students intuitively understand cylinder parameters and volume, and allowing dynamic adjustment of radius and height to observe volume changes.