Q. The ratio of the volumes of two cones having equal heights is 49 : 81. The ratio of their radii is:
✅ Correct Answer: (A)
7 : 9
Explanation: Volume ∝ r² when heights are equal. Radius ratio = √(49:81) = 7:9.
Explanation by: Mahesh Chandra
Volume ∝ r² when heights are equal. Radius ratio = √(49:81) = 7:9.