• # question_answer If the side of a square is increased by 20%, then its area is increased by : A)  25%                            B)  55%C)  44 %    D)  56.25%

(c): Let the side of a square is increased$x%$by, its area is increased by $\left( 2x+\frac{{{x}^{2}}}{100} \right)\text{ }%$ Here, $x=20%$ $\therefore$Effective increase in area$=\left( 2\times 20+\frac{20\times 20}{100} \right)%=44%$