The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:
Answer: Option C
Let original length = x metres and original breadth = y metres.
Original area = (xy) m2.
The difference between the original area = xy and new-area 36/25 xy is
= (36/25)xy - xy
= xy(36/25 - 1)
= xy(11/25) or (11/25)xy