Mathematics · Geometry
AB is the diameter of a semicircle. C is a point on the line segment AB such that AC = 6 cm. D is a point on the semicircle such that CD is perpendicular to AB and CD = 9 cm. Find the length of the diameter AB.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 17.5 cm
- 219.5 cm✓
- 312 cm
- 415 cm
Correct answer
19.5 cm
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