The radius of a circle is 12 cm. The length of a tangent drawn to this circle from a point at a distance of 15 cm from its center is
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Correct answer: C
Explanation
Radius = 12 cm
Distance from the center = 15 cm
Tangent = √(d² − r²)
= √(15² − 12²)
= √(225 − 144)
= √81
= 9