3D Geometry Gallery

Levels 40–99 · geometry3D

A gallery of three-dimensional wonders. Compute space diagonals, sphere surface areas, and cylinder volumes.

Study Before You Play

Brush up on these topics to sharpen your skills for this zone.

Surface Area & Volume

Sphere surface area is 4πr² and cylinder volume is πr²h — the core 3D formulas.

Pythagorean Theorem

The space diagonal of a box extends the Pythagorean theorem to 3 dimensions.

3D Geometry

Prisms, pyramids, spheres, and cylinders are the fundamental 3D shapes.