Civil Engineering MCQAE Level Civil Engineering
Hollow circular column: outer D=100 mm, inner d=80 mm. Radius of gyration ≈
Strength of MaterialsRadius of Gyration Hollow SectionHARD
Choose the correct answer
A
25.0 mm
B
32.0 mm
C
40.0 mm
D
50.0 mm
Correct Answer
B. 32.0 mm
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r=√[(D²+d²)/16]=√[(10,000+6,400)/16]=√1025=32.0 mm
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