Discussion
The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is
Answer: A
Let original length = x metres and original breadth = y metres
Original Area=xy m²
New Length =120100x=65x
New Breadth=120100y=65y
⇒New Area=65x * 65y
⇒New Area=3625xy
Area Difference=3625xy−xy
=1125xy
Increase%=DifferenceActual * 100
=11xy25 * 1xy * 100
=44%
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