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  1. If the volume of two right circular cones are in the ratio 4 : 1 and their diameter are in the ratio 5 : 4, then the ratio of their height is :
    1. 25 :16
    2. 25 : 64
    3. 64 : 25
    4. 16 : 25
Correct Option: C

V1
 =
r1²h1
V2r2²h2

⇒
4
 =
25
 ×
h1
116h2

⇒
h1
 =
16 × 4
 =
64
 or 64 : 25
h22525


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