A and B are the centres of two circles with radii 11 cm and 6 cm respectively. A common tangent touches these circles at P &Q respectively. If AB = 13 cm, then the length of PQ is

A and B are the centres of two circles with radii 11 cm and 6 cm respe

1.	A and B are the centres of two circles with radii 11 cm and 6 cm respectively. A common tangent touches these circles at P &Q respectively. If AB = 13 cm, then the length of PQ is
A.	13 cm
B.	17 cm
C.	8.5 cm
D.	12 cm
Answer» E.

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A and B are the centres of two circles with radii 11 cm and 6 cm respectively. A common tangent touches these circles at P &Q respectively. If AB = 13 cm, then the length of PQ is

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