______ formula is used for determining short as well as long columns.

1.	______ formula is used for determining short as well as long columns.
A.	Gilbert‚Äö√Ñ√∂‚àö√ë‚àö¬•s
B.	Rankine‚Äö√Ñ√∂‚àö√ë‚àö¬•s
C.	Johnson‚Äö√Ñ√∂‚àö√ë‚àö¬•s
D.	Euler‚Äö√Ñ√∂‚àö√ë‚àö¬•s
Answer» C. Johnson‚Äö√Ñ√∂‚àö√ë‚àö¬•s

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