You are tasked with designing a steel column for a structure that supports a compressive load of F=100,000 N. The column is to be made of steel with a yield strength of 300 MPa.

1. Choose a suitable cross-sectional shape (e.g., circular, rectangular) and justify your choice.
2. Calculate the minimum required dimensions to ensure a factor of safety of 2.0.
3. Discuss additional considerations for the design (e.g., buckling, material cost).