Centre of two concentric circles is O. The area of two circl

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SSC CGL Tier-2 9-March-2018 Maths Shift-2
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Centre of two concentric circles is O. The area of two circles is 616 cm² and 154 cm² respectively. A tangent is drawn through point A on the larger circle to the smaller circle. This tangent touches small circle at B and intersects larger circle at C. What is the length (in cm) of AC?

[SSC CGL Tier-2 9-March-2018 Maths Shift-2]

A 12√3

B 14√3

C 10√6

D 18√2