Two circles touch each other externally at point X. PQ is a simple com – McqOptions

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1.	Two circles touch each other externally at point X. PQ is a simple common tangent to both the circles touching the circles at point P and point Q. If the radii of the circles are R and r, then find PQ2.
A.	3πRr/2
B.	4Rr
C.	2πRr
D.	2Rr
Answer» C. 2πRr

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