Multiple choice If the diameter of a circle is doubled, its area will become- $\(p^2\) times$ Double $\(2p\) times$ 4 times Reveal answer Fill a bubble to check yourself D Correct answer Explanation Area of a circle = πr². When diameter is doubled, radius also doubles. New area = π(2r)² = 4πr², which is 4 times the original area. This follows from the square relationship between radius and area.