Mathematics · Geometry
During the construction of an underground circular tunnel, engineers install a support beam that acts as a chord across the tunnel's cross-section. The beam is 12 meters long and subtends a 90° angle at the tunnel's center. Determine the radius of the tunnel.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 112.00 m
- 28.49 m✓
- 34.24 m
- 46.00 m
Correct answer
8.49 m
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