If the side of a square is increased by 25%, then how much percent does its area get increased?
Options:
A . 125
B . 50
C . 156.25
D . 56.25
Answer: Option D
Let area 100 m2Then, side = 10 m New side = 125 % of 10= (125/100) x 10= 12.5 m New area = 12.5 x 12.5 m2=(12.5)2 sq. m? Increase in area = (12.5)2 - (10)2 m2= 22.5 x 2.5 m2=56.25 m2% Increase = 56.25 %
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