Mathematics · Geometry
In a circle with centre O, ABC is a secant intersecting the circle at A and B, and DC is a tangent to the circle at D. If DC = 12 cm and BC = 6 cm, then the length of AB is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 120 cm
- 222 cm
- 318 cm✓
- 416 cm
Correct answer
18 cm
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