A) Tripled
B) doubled
C) Made half
D) none of these
Correct Answer: B
Solution :
Let the initial length and breadth be \[\ell \]and b, respectively. So, the initial perimeter\[=2(\ell +b)\] The final perimeter\[=2(2\ell +2b)=4(\ell +b)\] Now, \[\frac{\text{Final}\,\text{perimeter}}{\text{Initial}\,\text{perimeter}}=\frac{4(\ell +b)}{2(\ell +b)}=2.\]
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