Discussion

The percentage increase in the area of a rectangle, if each of its sides is
increased by 20% is equal to

Answer: D

Let the length of rectangle be \(L\) units and breadth be \(B\) units.

So area of rectangle \(= L \times B\)

As both length and breadth has been increased by 20%

So new length = 1.2\(L\)

New breadth = 1.2\(B\)

New area \(= 1.2L \times 1.2B = 1.44LB\)

Percentage increase in area \(= \frac{1.44LB-LB}{LB} \times 100 = 44\)

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