If each side of the square is increased by 25% find the percentage change in its area? Options.
A) 89.45%
B) 56.25%
C) 89.98%
D) 54.48%
E) 45.0%
let each side of the square be a. then area =a^2   new side=125a/100=5a/4   new area=(5a/4)^2=25a^2/16   increase in area=(25a^2/16-a^2)=9a^2/16   increased %=(9a^2/16*1/a^2*100)=56.25%   Answer is(56.25%)
<result>B</result>
If each side of the square is increased by 25% find the percentage change in its area?