If sides of a square is increased by 23%, then find the percentage change in its area.
Answer & explanation
Correct answer: option 1
Total increased % in area = r% + r% + \(\frac{r × r}{100}\) %
= 23% + 23% + \(\frac{23 × 23}{100}\)%
=46% + 5.29% ⇒ 51.29%