A) 15 mm
B) 30 mm
C) 60 mm
D) 120 mm
Correct Answer: B
Solution :
\[\pi dt\pi =\frac{\pi }{4}\,{{d}^{2}}{{\sigma }_{c}}\] \[d=\frac{4t\pi }{{{\sigma }_{c}}}=\frac{4\times 15\times 3}{6}=30\,mm\]You need to login to perform this action.
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