Geometrymedium · Past Paper
The length of a tangent from a point 10 cm away from the center of a circle of radius 6 cm is:
A4 cm
B8 cm
C16 cm
D64 cm
✓ Correct Answer: B — 8 cm
Tangent length = sqrt(d^2 - r^2) = sqrt(10^2 - 6^2) = sqrt(100 - 36) = sqrt(64) = 8 cm.
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