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A chord of length 16 cm is at a distance of 6 cm from the centre of a circle. The radius of the circle is ? (answer in cm)

Competition practiceGeometry
  • A8
  • B10
  • C12
  • D14

Step-by-Step Solution

Half the chord is 8 cm. The perpendicular from the centre gives radius = √ √(64 + 36) = √100 = 10 cm.
Answer: B) 10

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