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वृत्त A की त्रिज्या वृत्त B की त्रिज्या से दो गुनी है। वृत्त B की त्रिज्या वृत्त C की त्रिज्या से दो गुनी हे। A,B,C के क्षेत्रफलों का अनुपात ज्ञात करें?
A. `16:4:1`
B. `4:2:1`
C. `1:2:4`
D. `1:4:16`

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क्षेत्रफल का अनुपात
`= ("Ratio of radius")^(2)`
`A B C`
Radius `4:2:1`
Area `16:4:1`

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