A) \[24\sqrt{10}\,\,cm\]
B) \[16\sqrt{10}\,\,cm\]
C) 64 cm
D) \[15\sqrt{10}\,\,cm\]
Correct Answer: C
Solution :
Let the width of rectangle = x cm \[\therefore \] Length of rectangle = 3x cm \[\therefore \] \[8\sqrt{10}=\sqrt{(9+1){{x}^{2}}}\] \[\Rightarrow \] \[x=8\,cm\] \[\therefore \] Length of rectangle \[=24\,cm\] and breadth of rectangle \[=8\,cm\] \[\therefore \] Perimeter of rectangle \[=2(24+8)=64\,cm\]You need to login to perform this action.
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