Prepare the hands-on activity
Compare the sphere model with the four circular chambers of matching reference radius.
REFERENCE VIEWS · IMAGE SEQUENCE 15 sec
Design-image sequence
Compare Sphere Surface Area Exhibit in five labelled still views. Turn a pivoting display to compare a sphere-surface model with four equal circular reference chambers.
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Compare the sphere reference and four circular openings in the catalogue views. The image sequence shows the arrangement, not a measured liquid-transfer test.
Compare the sphere model with the four circular chambers of matching reference radius.
Compare the four circular references with the sphere model, then use their common radius in the two area formulas.
Why is a sphere’s surface area four times the area of its great-circle disc? Use πr² for a disc and 4πr² for a sphere surface.
This film sequences existing reference images. It is not continuous operating footage or a moving 3D simulation; final function and configuration follow the agreed project.
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Bring a sketch, a reference video or a project brief. Let’s discuss the experience, the site and the practical next steps.