Multiple choice If the radius of circle is increased by 60%, then the area of circle increases by: 156 % 289 % 125 % 196 % Reveal answer Fill a bubble to check yourself A Correct answer Explanation When radius increases by 60%, new radius = 1.6r. New area = π(1.6r)² = 2.56πr². Original area = πr². Increase = 2.56πr² - πr² = 1.56πr², which is 156% of the original area.