A) \[40\sqrt{2}\,\,cm\]
B) \[40\,\,cm\]
C) \[200\,\,cm~\]
D) \[10\sqrt{2}\,\,cm~\]
Correct Answer: A
Solution :
Let a be the side of square. \[\therefore \] \[a\sqrt{2}=20\] \[\Rightarrow \] \[a=\frac{20}{2}\sqrt{2}\] \[=10\sqrt{2}\,cm\] \[\therefore \] Perimeter of square \[=4\times a=4\times 10\sqrt{2}\] \[=40\sqrt{2}\,cm\]You need to login to perform this action.
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