If sides of a square is increased by 40%, then find the percentage change in its area.

96% 94% 98% 97%

96%

Total increased % in area = r% + r% + \(\frac{r × r}{100}\) %                                      = 40% + 40% + \(\frac{40× 40}{100}\)%                                      =80% + 16% ⇒ 96%