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In the adjoining figure, the circles wit...

In the adjoining figure, the circles with centres A and B touch each other at E Line l is a common tangent that touches the circles at C and D respectively. Find length of seg CD if the radii of the circles are 4 cm, 6 cm ?
Construction :
Draw seg AE and seg EB.
Draw seg AF `bot` seg BD, B - F- D

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