If sides of a square is increased by 40%, then find the percentage change in its area.
Answer & explanation
Correct answer: option 1
Total increased % in area = r% + r% + \(\frac{r × r}{100}\) %
= 40% + 40% + \(\frac{40× 40}{100}\)%
=80% + 16% ⇒ 96%
If sides of a square is increased by 40%, then find the percentage change in its area.
Correct answer: option 1
Total increased % in area = r% + r% + \(\frac{r × r}{100}\) %
= 40% + 40% + \(\frac{40× 40}{100}\)%
=80% + 16% ⇒ 96%