Question: A slender, solid cylindrical column of height L supports a load F . If overloaded, the column fails by elastic buckling. By how much is

A slender, solid cylindrical column of height L supports a load F. If overloaded, the column fails by elastic buckling. By how much is the load-bearing capacity increased if the solid cylinder is replaced by a hollow circular tube of the same cross-section A? knowing that the standard section is solid square cross section.
\table[[\table[[Section],[Shape]],Area A (m),Moment Q (m4),moment K (m4),\table[[Moment Z],[(m3)
A slender, solid cylindrical column of height L

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