If radius of a circle is increased by 17%, then the increase in its area is:
Answer & explanation
Correct answer: option 1
Total increased % in area = r% + r% + \(\frac{r × r}{100}\) %
= 17% + 17% + \(\frac{17 × 17}{100}\)%
= 34% + 2.89% ⇒ 36.89%
If radius of a circle is increased by 17%, then the increase in its area is:
Correct answer: option 1
Total increased % in area = r% + r% + \(\frac{r × r}{100}\) %
= 17% + 17% + \(\frac{17 × 17}{100}\)%
= 34% + 2.89% ⇒ 36.89%