The radius of circle A is twice that of circle B and the

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The radius of circle A is twice that of circle B and the radius of circle B is twice that of circle C. Their area will be in the ratio

1. 16 : 4 : 1
2. 4 : 2 : 1
3. 1 : 2 : 4
4. 1 : 4 : 16

Correct Option: A

Using Rule 14,
Required ratio = π(4r)² : π(2r)² : π(r)²
= 16 : 4 : 1