🧮 Formula Check for Design Solids

Students work through selected examples tied to the storage or floor-plan challenge using prisms, cylinders, pyramids, cones, spheres, and composite solids. They annotate a shared reference page in their Personal Geometry Investigation Notebook with formulas, variable definitions, unit conventions, and one efficiency ratio such as volume per square unit of surface area. The class briefly compares when each formula fits the design situation and where measurement errors could distort conclusions.