Mathematics · Geometry
Two circles touch each other externally at a point O. AB is a direct common tangent to both the circles, touching them at point A and point B respectively. If the radii of the circles are 9 cm and 4 cm, then find the length of AB.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 172 cm
- 212 cm✓
- 3144 cm
- 424 cm
Correct answer
12 cm
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