If each side of a square is increased by 25%, find the percentage change in its area?
Choose the correct choice:
A) 52.25%  B) 42.55%  C) 56.25%  D) 36.55%  E) 26.55%
let each side of the square be a , then area = a x a   New side = 125a / 100 = 5a / 4   New area =(5a x 5a) / (4 x 4) = (25a²/16)   increased area== (25a²/16) - a²   Increase %= [(9a²/16 ) x (1/a² ) x 100]% = 56.25%   ANSWER : 56.25%
<result>C</result>
If each side of a square is increased by 25%, find the percentage change in its area?