3D shapes include cubes, spheres, cones, cylinders, and more.

These shapes have volume and surface area, unlike 2D shapes.

Volume measures how much space the shape occupies.

Surface area is the total area covering the shape’s outside.

Formulas vary: cube = side³, cylinder = πr²h, sphere = ⁴⁄₃πr³.

3D models are key in architecture, packaging, and printing.

Engineers design real-world objects using solid geometry.

Understanding 3D shapes helps visualize structures and storage.

Try building 3D figures using paper or blocks to explore concepts.

Geometry brings depth and space to your mathematical thinking.