A) 125
B) 50
C) 100
D) 75
Correct Answer: A
Solution :
[a] Here, \[a=50%\] \[\therefore \]Required percentage increase in surface area \[=\left( 2a+\frac{{{a}^{2}}}{100} \right)%=\left( 100+\frac{2500}{100} \right)%\] \[=125%\] |
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