If two circles touch externally with radii 2cm and 1cm respectively then the distance
between the centres is ______cm.
(A) 3 (B) 2 (C) 1 (D) 0
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Step-by-step explanation:
If the two circles touches externally, then the distance between their centers is equal to the Sumoftheirradii
= 2+1= 3cm
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