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The sides of a triangle ABC are 4 cm, 6 ...

The sides of a triangle ABC are 4 cm, 6 cm and 8 cm. With the vertices of the triangle as centres, three circles are drawn each touching the other two externally. What is the sum of the radii of the three circles?

A

6 cm

B

7 cm

C

9 cm

D

10 cm

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