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OpenStudy (anonymous):
2 circles of radii 10 cm and 8 cm intersect each other, and the length of the common chord is 12 cm. The distance between their centres is a) (6+ 4 root 5) cm b) (6- 4 root 5)cm c) (8- 2 root 7) cm d) (8 + 2 root 7) cm
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OpenStudy (anonymous):
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