A steel girder 9m long is to be moved horizontally around a corner from one corridor 2.5m wide into a second corridor at right angles to the first. How narrow can the second corridor be and still permit the girder to go around the corner?

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anonymous · Answer

I don't know how they got it but there is a formula for this here: http://everything2.com/title/How+to+tell+if+it+will+fit+around+the+corner I fed it into Wolfram and got 3.91669 http://www.wolframalpha.com/input/?i=%282.5^%282%2F3%29+%2B+y^%282%2F3%29%29^%283%2F2%29%3D9