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Two concentric circles have radii 10 cm and 6 cm. Find the length of the chord of the larger circle that touches the smaller circle.

Competition practiceGeometry
  • A16 cm
  • B8 cm
  • C12 cm
  • D4√34 cm

Step-by-Step Solution

The radius of the small circle to the point of contact is perpendicular to the chord and bisects it. Half the chord is cm, so the chord is 16 cm.
Answer: A) 16 cm

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