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Two circles of radii 5.5 cm and 3.3 cm respectively touch each other. What is the distance between their centres? 

(A) 4.4 cm 

(B) 8.8 cm 

(C) 2.2 cm 

(D) 8.8 or 2.2 cm

1 Answer

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(D) 8.8 or 2.2 cm

Two circles can touch each other internally or externally. 

∴ Distance between centres = 5.5 + 3.3 or

5.5 – 3.3 = 8.8 or 2.2

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