Question
The circles are not drawn to scale. The small circle is with radius d and the big circle is with radius D. The ratio of d to D is 2 : 9. If the area of the small circle is 81π m2, find D. Express your answer in mixed number.
2 m

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The circles are not drawn to scale. The small circle is with radius d and the big circle is with radius D. The ratio of d to D is 2 : 9. If the area of the small circle is 81π m2, find D. Express your answer in mixed number.