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UPSC CDS 1 2020 Math Paper

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Question : 71

Total: 100

Two circles touch internally. The sum of their areas is 136πrcm2 and distance between their centres is 4 cm. What are the radii of the circles ?

11 cm, 7 cm
10 cm, 6 cm
9 cm, 5 cm
8 cm, 4 cm

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