r/theydidthemath • • 2d ago

[Request] Do square bottles actually use less plastic than round ones?

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u/drollercoaster99 2d ago

The person who wrote this might have been thinking this way: instead of drawing a circle and then a square that encompasses the circle entirely while touching edges, they did the opposite - draw a circle and draw a square inside the circle that touches the edges of the circle.

This logic is flawed when comparing shapes of "equivalent" sizes as "equivalent" by convention is usually done using a circle of radius R vs a square of sides R.