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Two circles with the same centre P have radii 7 5...

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Geometry
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Two circles with the same centre P have radii 7.5 cm and 4.4 cm. Through a point A of the larger circle, a tangent is drawn to the smaller circle touching it at B. Find AC (Approximate in cm).

Answer & Solution
Correct Answer: Option B
Geometry mcq question image
(7.5)2 - (4.4)2 = a2
56.25 - 19.36 = a2
36.89 = a2
6.07 = a
2a = 12.14 cm
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