1.

Two circles have radii 6 cm and 3 cm and are centered at the point P and Q, respectively. A transverse common tangent AC to both circles cuts the line joining P and Q at a point B such that AB = 8 cm. Find the length (in cm) of PQ.

A. 5
B. 10
C. 15
D. 20
Answer» D. 20


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