This shape (pictured) allows for the biggest area of sofa based on the size of the corridor] Dr Jineon Baek, a mathematician from Yonsei University, Korea, has found the biggest possible sofa that can be pivoted around a 90-degree corner.
While his proof will need to be checked, Dr Baek is confident that he will be found correct] While Ross Gellar might have failed to get his sofa up the stairs in this iconic Friend's scene, mathematicians have now proven how he could have pivoted his sofa around the corner.
Mathematicians reveal how Ross Geller COULD have got his sofa up the stairs in iconic Friends scene Any fan of 'Friends' knows there's only one way to get a sofa around a tight corner: Pivot!.
Pictured: An illustration of how Gerver's sofa might look] That means that, if the Friend's stairwell was 2m-wide, the biggest sofa Ross could have ever moved in would have an area of 4.439 metres squared.
The question is: For a 2D corridor one unit wide, what is the biggest sofa you could move around a 90-degree turn and how big is that sofa?
