A) 12.5% increase
B) 10% increase
C) 25% increase
D) 20% increase
Correct Answer: A
Solution :
Let the initial length and the breadth of the rectangle be x and y respectively. Initial area = xy Now, new length \[\frac{15}{\pi }\] And new breadth\[\frac{30}{{{\pi }^{2}}}\] \[2\pi \] New area\[{{120}^{o}}\] Clearly, new area is more than the initial area. \[9\frac{3}{7}\] Increment in percent in area \[P%\] \[{{P}^{2}}%\]
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