Mathematics · Geometry
In a circle centered at O, a diameter AB is extended to a point C outside the circle. CD is a tangent at point D on the circle. If CD = 7√3 cm and ∠DBC = 120°, then the length of the diameter of the circle is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 116 cm
- 220 cm
- 318 cm
- 414 cm✓
Correct answer
14 cm
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