alleryA point is 13 cm from the centre of a circle of radius 5 cm. What is the length of the tangent from it?
A12 cm
B10 cm
C14 cm
D8 cm
Answer & Solution
Correct answer: A. 12 cm
The tangent is perpendicular to the radius at the touch point, so its length is √(13² − 5²) = 12 cm.
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