Question
The circles are not drawn to scale. The small circle is with radius k and the big circle is with radius K. The ratio of k to K is 5 : 9. If the area of the small circle is 121π cm2, find K. 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 k and the big circle is with radius K. The ratio of k to K is 5 : 9. If the area of the small circle is 121π cm2, find K. Express your answer in mixed number.