Let the heights and base areas of two cones be h1,h2 and A1,A2, respectively.
Since, the volumes are equal.
Then, V1=V2.
⟹ 13A1h1=13A2h2
⟹ A1A2=h2h1
⟹ A1A2=916=9:16.
Hence, option B is correct.
The circumferences of two circles are in the ratio 3 : 4. The ratio of their area is
(a) 3 : 4 (b) 4 : 3 (c) 9 : 16 (d) 16 : 9