Square Cross Sections Perpendicular to x-Axis

① This example demonstrates how to slice a 3D solid with planes perpendicular to the x-axis, producing a series of square cross sections, and visually illustrates the cross-section method in solid geometry. ② Core mathematical concepts include: the cross-section method, integral calculus for volume, the relationship between function graphs and planar sections, and how square cross sections vary with the x-coordinate. ③ Construction highlights: Based on the construction summary, the GeoGebra command CurveCartesian is used to draw curves, and objects f, a, aa, bb, b are defined, likely to control the position, size, or parameters of the sections, enabling dynamic movement along the x-axis via sliders or dynamic geometry. ④ Suitable for high school or early college students to understand the application of definite integrals in volume calculation and to enhance spatial visualization skills.