Question

If the radius of a circle is increased by 15% its area increases by _____.

• A. 15%
• B. 30%
• C. 32.25%
• D. 16.5%

Answer 1

Answer:

C. 32.25%

Area increased by = 15 + 15 + (15 × 15)/100 = 30 + 2.25 = 32.25%