Two right circular cylinders of equal volume have their

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Two right circular cylinders of equal volume have their heights in the ratio 1 : 2. The ratio of their radii is :

1. √2 : 1
2. 2 : 1
3. 1 : 2
4. 1 : 4

Correct Option: A

Let radius are r₁ and r₂ respectively, then πr_{1²h₁ = πr₂²h₂where h₁ and h₂ are heights
According to question, h₁ : h₂ = 1 : 2
∴ r₁ : r₂ = √h₂ : h₁ = √2 : 1
= √2 : 1}