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Two circles touch each other internally. The radius of the smaller circle is 6 cm and the distance between the centre of two circles is 3 cm. The radius of the larger circle is :
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- 7.5 cm
- 9 cm
- 8 cm
- 10 cm
- 7.5 cm
Correct Option: B
As per the given in question , we draw a figure of two circles touch each other internally , 
Given , The radius of the smaller circle = 6 cm
and the distance between the centre of two circles = 3 cm.
∴ Radius of larger circle = 6 + 3 = 9 cm.
