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Two circles of radii 5 cm and 3 cm touch each other internally. The distance between their centres is
A8 cm
B5 cm
C2 cm
D3 cm
Answer & Solution
Correct answer: C. 2 cm
1. For circles touching internally, distance between centres = difference of radii.
2. Difference = 5 - 3.
3. Hence 2 cm.
_Source: NCERT Class 10 Mathematics, Ch 10 "Circles", §10.3_
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