A) 7
B) 10
C) 11
D) 14
Correct Answer: A
Solution :
Side of square \[=\sqrt{121}=11\,cm\] \[\therefore \] Length of wire \[=4\times 11=44\,cm\] \[\therefore \] \[2\pi r=44\] \[\Rightarrow \] \[2\times \frac{22}{7}\times r=44\] \[\Rightarrow \] \[r=\frac{44\times 7}{2\times 22}=7\,cm\]You need to login to perform this action.
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