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Two circles of radii 8 cm and 6 cm touch each other externally. The length of the direct common tangent is:
The length of the direct common tangent = 2$$\sqrt{r1.r2}$$
r1 = 8 cm
r2 = 6 cm
The length of the direct common tangent = 2$$\sqrt{8 \times 6}$$
= 2$$\sqrt{48} = 2 \times 6.93 = 13.86 cm$$
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