Question

The area of a square increases by _____if its side increases by 30$\%$

• A. 71$\%$
• B. 60$\%$
• C. 69$\%$
• D. 30$\%$

Answer 1

Answer: (C)

69$\%$

Answer 2

Corresponding increase in area=$30+30+\frac{30\times30}{100}$
$= 60+9=69\%$

The correct option is (C): 69$\%$