CAT 2019 Slot 2 QA · Question 7

Two circles, each of radius 4 cm, touch externally. Each of these two circles is touched externally by a third circle. If these three circles have a common tangent, then the radius of the third circle, in cm, is

A.
$\frac{π}{3}$
B.
1
C.
$\frac{1}{2}$
D.
$2$

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