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Two circles of radii 5 cm and 3 cm touch each other externally. The distance between their centres is
A2 cm
B5 cm
C15 cm
D8 cm
Answer & Solution
Correct answer: D. 8 cm
1. For circles touching externally, distance between centres = sum of radii.
2. Sum = 5 + 3.
3. Hence 8 cm.
_Source: NCERT Class 10 Mathematics, Ch 10 "Circles", §10.3_
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