The percentage increase in the area of rectangle , if each of its side is increased by 10% is? Choose the correct choice from the following options:
A) 21%  B) 30%  C) 25%  D) 40%  E) 50%
Let original length = x meters   original breadth = y meters   original area = xy m^2   New length = 110x/100   New breadth = 110y/100 = 11y/10   New area = 11x/10 * 11y/10 = 121xy/100 m^2   Increase percent = 21xy/100 * 1/xy *100 = 21%   21%nswer is 21%
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The percentage increase in the area of rectangle , if each of its side is increased by 10% is?